Bletchley Park

The Secret Life of Bletchley Park: The WWII Codebreaking Centre and the Men and Women Who Worked There

by Sinclair McKay  · 24 May 2010  · 351pp  · 107,966 words

Lawn, Trudie Marshall, Geoffrey Pidgeon, Veronica Plowman, Nicolas Ridley, Captain Jerry Roberts, Sarah and John Standing and especially to Jean Valentine. Thanks also to the Bletchley Park Trust – which has made the museum such an invaluable and fascinating draw for generations to come. Contents Praise Title Page Acknowledgements 1 Reporting for Duty

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around the station acquired a chillingly metaphorical depth. And even for the others who reported for duty in more conventional, brighter daylight, the introduction to Bletchley Park was no less disorientating. The experience of another veteran, Sheila Lawn (née MacKenzie), just nineteen years old at the time, was not untypical. Sheila

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intelligence – codenamed Ultra – helped, in the words of President Eisenhower, to shorten the war by two years. Indeed, according to the eminent historian – and Bletchley Park veteran – Professor Sir Harry Hinsley, the figure should be three years. Prominent critic and essayist George Steiner went further: he stated that the work done

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substantial number of well-bred debutantes, sought out upon the social grapevine, and equally determined to do their bit. A surprising number of people at Bletchley Park were either already famous, or would become famous not long after their time there. These ranged from glamorous film actress Dorothy Hyson (with occasional

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high risk from potential German bomber raids. The horrifying Blitzkrieg campaign in Spain had demonstrated just how lethally effective such attacks could be. Previously, the Bletchley Park estate had belonged to the wealthy Leon family. But in 1937, the heir, Sir George, lost interest in maintaining the trappings of country life.

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people were wholly convinced by this. And on the intelligence side, the quiet, furtive preparations for the coming, inevitable conflict became ever more intense. Bletchley Park was placed under the control of Commander Alistair Denniston. Originally the establishment was supposed to have been run by Admiral Sir Hugh Sinclair, but he

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us on our qualifications.’ Other experienced codebreakers who had served alongside Denniston in that interwar period, and who were to make such a difference at Bletchley Park, were Josh Cooper, John Jeffreys, Frank Lucas, Nigel de Grey, Oliver Strachey and Colonel John Tiltman, an utterly brilliant veteran cryptographer. Oliver Strachey, related

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, revolutionary proto-computer constructions that could sift through the dizzying millions of potential combinations of each code. Nor was it just codebreakers who were needed. Bletchley Park also required the services of able, fast-witted linguists – young men and women fluent especially in German. It also needed stalwart administrative backup; people

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big house having automatic precedence over the townspeople over looked by the estate. Regardless of their youth, the largely middle-class intake of recruits to Bletchley Park were of a higher social station than the townsfolk. And the townsfolk simply had no business asking them about their affairs. Even though households

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the Polish contingent based in Paris – even with their scantier resources – were still brilliantly helpful to the Bletchley operation. Very shortly after Turing returned to Bletchley Park, the momentous breakthrough came. The veteran Frank Lucas recalled: ‘On a snowy January morning of 1940, in a small bleak wooden room with nothing but

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, however useful in some sense, were also notoriously unreliable. As the conflict unfolded, there were to be instances when vital tips picked up at Bletchley Park were dismissed by senior officers simply because it was felt that the information had been gleaned from untrustworthy quarters. ‘The German strategy,’ wrote codebreaker Jack

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a breach of all previous agreements and arrangements, that I could no longer remain in your service to work with its proposer. In my opinion, Bletchley Park should be a cryptographical bureau supplying its results straight and unadorned to Intelligence Sections at the various ministries. At present, we are encumbered with ‘

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of friction and stress within the organisation of the Park itself would come to the fore and be felt by all. Before that, though, came Bletchley Park’s magnificent moment of technological breakthrough – the introduction of the bombe machines. 10 1940:The Coming of the Bombes Secret service officer Frederick Winterbotham

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task of checking endless combinations at a speed beyond even an army of codebreakers was revolutionary. When the young mathematician Oliver Lawn was recruited to Bletchley Park by Gordon Welchman, he found himself being diverted into the business of creating a bombe that would be effective. Construction took place in Letchworth,

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the US base of Pearl Harbor in Hawaii in December 1941, thus bringing the Americans into the war, it was suggested by some sources that Bletchley Park, through its work on the ‘Purple’ Japanese codes, had decrypted vital messages concerning Japanese military intentions. The allegation was that having seen such intelligence,

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their peers. It also prompts one to wonder how such blithe carryings-on were regarded by friends and colleagues of different backgrounds. The personnel of Bletchley Park were initially drawn either from the intellectual or the social elite; young Cambridge mathematicians working alongside girls in pearls. According to Josh Cooper, some

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more appropriately: ‘We were fortunate in having an inspiring national leader in Winston Churchill, whose oratory had a powerful effect.’ But Churchill’s relationship with Bletchley Park was of the greatest importance. It was not simply a question of the grand old man granting the codebreakers extra resources for machinery or staff

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including Alan Turing – found such duties and manoeuvres amusing and diverting. But the notion that it was compulsory goes to the heart of one of Bletchley Park’s most beguiling, ambiguous and disorientating qualities. As we have seen, the establishment was neither wholly military nor wholly civilian. Although in its earliest days

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dawned, some of these internal pressures were finally to erupt. While it enjoyed the untrammelled and deep admiration of Churchill, the quasi-academic atmosphere of Bletchley Park was not otherwise viewed outside with universal approbation. Particularly, it appears, within certain corners of Whitehall, there was disquiet concerning the way that information was

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new directorate; that it was inefficient, not doing its job properly. The Intelligence branches of the Services were becoming increasingly uneasy about the fact that Bletchley Park was producing so much intelligence autonomously (and possibly doubly uneasy about the fact that Bletchley appeared to have the wholehearted support of Churchill). In other

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by contrast was an army man. The old service rivalries died hard. According to Nigel de Grey, commenting more diplomatically later, these and other internal Bletchley Park conflicts were ‘an imbroglio of conflicting jealousies, intrigue and differing opinions’. Yet those furious threats of resignation from Dilly Knox – perhaps exacerbated by ill-health

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the Park; and poet Henry Reed met Michael Ramsbotham. Meanwhile, historian Roland Oliver fell headlong for Caroline Linehan. But perhaps the most poignant relationship at Bletchley Park – not to say the most unexpected – involved Alan Turing. In the summer of 1940, a mathematician called Joan Clarke (later Murray), who had been

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sides, regardless of their ally status, had so readily and widely pooled their codebreaking intelligence expertise. And while the Americans got Turing and new bombes, Bletchley Park got some Americans – soldiers who also happened to be expert cryptographers. Codebreaker Oliver Lawn recalls their arrival: ‘The American army sent over a batch of

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set up in England and later moved to the continent, they had their own American Ultra intelligence officers and their own special communications with Bletchley Park, but at Bletchley Park itself British and Americans were integrated. In 3A for example, some of the Air Advisers were American, but all the Advisers served all

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marvellous machines and many attractive ladies. The machines were made by the British Tabulating Company and the ladies by God.’7 The American contingent at Bletchley Park clearly found life in the Buckinghamshire countryside congenial and stimulating in a variety of ways. Consider this account from an American soldier, collected by

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in Middlesex analysing Russian intercepts. Meanwhile, the gallant General Bertrand remained in France, under the Vichy government. This in turn caused the administration at Bletchley Park great anxiety; for what if the Germans were to find Bertrand and his French cryptography experts and force them to reveal Enigma secrets? As it

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were doing. One Lieutenant Skalak seemed alarmingly garrulous when among British officers, or at dances with Wrens. Indeed, such was the fright he caused that Bletchley Park prevailed upon the FBI to investigate his background thoroughly. Skalak’s loyalty was beyond doubt. He had simply been behaving rather overenthusiastically. This also seemed

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been withholding vital military information from its Russian ally. In fact, from 1941, Churchill had for tactical reasons personally been feeding Stalin information gleaned from Bletchley Park; the more difficulties that Hitler encountered on the Eastern Front, the better for the Allies. However, the consequences of Cairncross’s actions could have been

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danger that their intelligence would alert the Germans to the fact that their traffic was being systematically decoded. In other words, Cairncross jeopardised the entire Bletchley Park operation – and with it, potentially, countless lives – for the sake of his ideological beliefs. Actually, Cairncross managed to pass so much raw material over

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that the Cairncross handover of decrypts must have provided a fairly strong indication. As the war progressed, the Russians certainly learned of the existence of Bletchley Park, which they referred to as ‘Krurort’. According to Miranda Carter’s biography of Anthony Blunt, he also handed over Bletchley decrypts to his Soviet

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more complex process of encoding would emerge. It was equally inevitable that, faced with such demands, the theoreticians and engineering geniuses who worked for Bletchley Park would make giant strides forward in terms of technology. The one name that shines out in terms of engineering ingenuity was Tommy Flowers, familiarly known

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) punched through tape, each series of five in different configurations representing a different letter of the alphabet. What made these communications – which became known around Bletchley Park as ‘Fish’ or ‘Tunny’ – particularly crucial was that many of them involved messages sent to and from German High Command. These were not merely

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electronic circuits. Turing spent many weeks formulating methods through which the thing could be cracked; these were referred to as ‘Turingismus’. Also present at Bletchley Park was one Dr Charles Wynn-Williams, a circuit expert brought in from radar research who had the wherewithal to build digital circuitry with electronic valves

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different experiences, different subjects. Yes, that was the collegiate feel, all the different disciplines.’ The Hon. Sarah Baring had been educated only by governesses. Nevertheless, Bletchley Park seemed to her at times to have a distinctly campus feel: ‘Of course the cryptographers were all brilliant mathematicians. And they were a class apart

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head of MI5. David Rees went on to become a tremendously eminent Professor of Mathematics at Exeter University. Elsewhere, the extraordinary musical traditions of Bletchley Park were upheld proudly in codebreaker Douglas Craig’s subsequent career as an opera baritone, a creative executive at Glyndebourne and later Director of Sadler’s

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Surrounding Country 1 Malcolm Muggeridge, Like It Was (Methuen, 1982) 2 Landis Gores, quoted by Kathryn A. Morrison in her monograph ‘The Mansion at Bletchley Park’ (English Heritage) 3 Bletchley Park Trust Archive, quoted in Marion Hill, Bletchley ark People (The History Press, 2004) 5 1939: How Do You Break the Unbreakable? 1 Robin

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Purnell Books, 1974) 2 Andrew Hodges, Alan Turing, The Enigma (Burnett Books, 1983) 3 F.H. Hinsley and Alan Stripp, Codebreakers: The Inside Story of Bletchley Park (Oxford University Press, 1993) 4 Memo from Frank Birch to Edward Travis, National Archives 5 Correspondence between Dr Dunlop and Commander Bradshaw, National Archives 6

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Quoted in Paul Gannon, Colossus – Bletchley Park’s Greatest Secret (Atlantic, 2006) 11 1940: Enigma and the Blitz 1 Peter Calvocoressi, interviewed by the BBC 2 Aileen Clayton, The Enemy Is Listening

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Cooper’s account, National Archives 2 Recruitment documents, National Archives 3 Lord Dacre, interviewed by Graham Turner, Daily Telegraph, 2000 4 Quoted by Marion Hill, Bletchley Park People (The History Press, 2004) 5 Hairdressing facility memos, National Archives 13 1941: The Battle of the Atlantic 1 Joan Murray, quoted in Enigma: The

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Briggs, foreword to Gwen Watkins, Cracking the Luftwaffe Codes (Greenhill Books, 2006) 5 Memos concerning staffing, National Archives 6 Superintendent Blagrove, quoted in Marion Hill, Bletchley Park People (The History Press, 2004) 14 Food, Booze and Too Much Tea 1 Irene Young, Enigma Variations: A Memoir of Love and War (Mainstream, 1990

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Civilian? 1 Peter Calvocoressi, Top Secret Ultra (Cassell, 1980) 2 Edward Thomas, essay in F.H. Hinsley and Alan Stripp, Codebreakers: The Inside Story of Bletchley Park (Oxford University Press, 1993) 3 R.A. Ratcliff, Delusions of Intelligence (Cambridge University Press, 2006) 18 1942: Grave Setbacks and Internal Strife 1 Kim Philby

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Angus Wilson: The Biography (Secker and Warburg, 1995) 2 Jon Cohen, interviewed by the BBC 3 Wren interview, Bletchley Trust Archive, quoted in Marion Hill, Bletchley Park People (The History Press, 2004) 20 1943: A Very Special Relationship 1 Michael Howard, Times Literary Supplement, autumn 2009 2 Barbara Abernethy, talking to Michael

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1983) 4 Peter Calvocoressi, Top Secret Ultra (Cassell, 1980) 5 Telford Taylor, essay in F.H. Hinsley and Alan Stripp, Codebreakers: The Inside Story of Bletchley Park (Oxford University Press, 1993) 6 Christine Brooke-Rose, quoted in Smith, Station X 7 Harry Fensom, addressing an Enigma symposium, 1992 8 American soldier, quoted

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Treason and the Universities (Weidenfeld and Nicolson, 1986) 5 Quoted in the Independent, 1994 6 Mavis Batey, From Bletchley with Love (Bletchley Park Trust monograph) 23 The Cultural Life of Bletchley Park 1 Lucienne Edmonston-Stowe, addressing an Enigma symposium, 1992 2 John Cairncross, The Enigma Spy: The Story of the Man who Changed

The Secrets of Station X: How the Bletchley Park codebreakers helped win the war

by Michael Smith  · 30 Oct 2011  · 440pp  · 109,150 words

, breaking German army and Luftwaffe Enigma. ‘Gives a more comprehensive picture of the wartime activities of myself and my colleagues than any other book on Bletchley Park.’ Jimmy Thirsk, Sixta Log Reader analysing German radio communications for Hut 6. ‘A thoroughly enjoyable read and a wonderful reminiscence of times gone by. It

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did much to assist the Allies in winning the war. This book is an unashamed tribute to them and the astonishing organisation that Bletchley Park was. I thank the Bletchley Park Trust for providing most of the photographs used in this book, Iain Dale and James Stephens at Biteback for their support and their

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be so busy laying concrete, installing a new water main, digging in power cables and laying telephone lines to connect the old mansion house at Bletchley Park to Whitehall’s corridors of power. Then there was that rather odd-looking group of people, mainly middle-aged ‘professor types’ accompanied by surprisingly

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recruited, as with their MI6 colleagues, from a limited circle of people within the establishment. Joshua ‘Josh’ Cooper, who would become a leading member of Bletchley Park and subsequently its Cold War successor GCHQ, recalled being recruited as a ‘Junior Assistant’ in October 1925 when he was twenty-four. Like many other

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signals intelligence were fought out and so much was achieved; the conditions of work there reflected upon so many problems of staff and efficiency that Bletchley Park and its gradual complete transformation became an historical factor that it is impossible to ignore. On mobilisation, the house was already too small to accommodate

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the importance of the Polish codebreakers and arranged for them to leave for Paris immediately. Attempts by Knox, Denniston and Menzies to bring them to Bletchley Park failed and they were incorporated into the French intercept site – the Poste de Commandement Bruno, based in the beautiful Château de Vignolles, in Gretz-Armainvilliers

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number, line number and position of the word within the line. This link was used to send Foley details of German progress garnered from the Bletchley Park decodes and disguised as information ‘from our own forces’. The German occupation of Norway was still continuing, providing large amounts of intelligence from the Yellow

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to fighting in France and Norway, the Germans turned their attention towards Britain. Concerns over the possibility of an imminent invasion pervaded the atmosphere at Bletchley Park. ‘The sinister covername for an Operation Sea Lion began to appear in the Luftwaffe traffic,’ said de Grey. ‘It did not require much ingenuity to

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South American Section who, in turn, have been transferred to the Park. Gradually, there was more cooperation between the RAF intelligence and signals chiefs and Bletchley Park, who thanks to the reports from Cooper’s ‘Computors’ and the Brown Enigma were beginning to appreciate the value of the intelligence the codebreakers could

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. But reconnaissance flights failed to find any suitable German vessels in the Channel and Operation Ruthless had to be called off, causing immense disappointment at Bletchley Park. ‘Turing and Twinn came to me like undertakers cheated of a nice corpse yesterday, all in a stew about the cancellation of Ruthless,’ Birch told

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History Museum and had access to special materials used in the preservation of old documents. His presence was doubly fortunate. He had been sent to Bletchley Park because he was an expert in cryptogams, not – as the recruiting officer clearly assumed – encyphered messages, but mosses, ferns, algae, lichens and fungi. The RAF

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reading, providing details of the systematic murder by the advancing German forces of thousands of Jews. The first news of these killings was read at Bletchley Park. On 18 July 1941, Army intercept operators based temporarily at Chicksands picked up a message from Obergruppenführer Erich von dem Bach-Zelewski, Ordnungspolizei commander in

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would have made very clear that the information came from intercepted German police messages. On 23 August 1941, the day before Churchill made his speech, Bletchley Park decyphered a message from SS Gruppenführer Friedrich Jeckeln, commander of the SS and police troops in the south, which confirmed that like von dem Bach

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the Soviet Union. They switched from the double transposition system to a system known as Double Playfair, a fairly sophisticated substitution system, albeit one that Bletchley Park was able to break again with relative ease. Also on 12 September, Churchill saw his final report on the killing of Jews during this initial

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well suited to keeping the varied, often difficult characters who inhabited the inter-war GC&CS happy, was not adequate to running the increasingly mechanised Bletchley Park codebreaking operation. The German military operations in North Africa, the Mediterranean, the Balkans and on the Eastern Front were now generating a massive amount of

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to see you on a matter of national importance’. Colonel Freddie Nicholls was in fact the head of MI8, the military intelligence department concerned with Bletchley Park and the Army’s radio interception or ‘Y’ Service. ‘I arranged to attend at Devonshire House in Piccadilly, the headquarters of MI8, and found

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kind of authority there was, was dependent on leadership and personality and not on any kind of sanctions. Ann Lavell recalled that the atmosphere at Bletchley Park, even after the military tried to impose themselves on the members of the armed forces working there, was unlike any other and encouraged informality. You

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what they will be doing.’ Currier described landing at Sheerness dockyard on the afternoon of 8 February, and being met by a small delegation from Bletchley Park which included Tiltman. The crates containing the precious Top Secret ‘packages’ were loaded onto lorries and the convoy headed west towards London en route for

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but the documents… These burials of essential documents are, I believe, made in accordance with your policy of ‘hush-hush’ or concealment from workers in Bletchley Park of the results of their colleagues. Against this I protest on several grounds… Such action cripples the activities of the cryptographer who depends on ‘cribs

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the post of Professor of Classics at Leeds University during the inter-war years in order to continue codebreaking. As a scholar, for of all Bletchley Park I am by breeding, education, profession and general recognition almost the foremost scholar, to concede your monstrous theory of collecting material for others is impossible

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expanded’. Almost immediately after the Italians’ defeat, an Italian Air Force message referring to Luftwaffe escorts for convoys between Naples and Tripoli was decyphered at Bletchley Park. Hut 4 concluded from this that the convoys were carrying Germans and that Hitler must be sending troops to support his beaten ally. The codebreakers

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is another.’ But the tide was about to turn, and as a direct result of a dramatic improvement in the work of the codebreakers at Bletchley Park which included much greater coordination between the codebreaking process and traffic analysis. During 1940, three teams of officers and mostly female civilians began working on

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was normally a grey picture of difficult breaking and low-grade intelligence, brightened occasionally by spectacular flashes of brilliant success and priceless information. Fortunately, the Bletchley Park codebreakers now had another source of high-grade German intelligence that more than filled the gap in Italy, and ensured they not only knew what

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or inactive. They were then passed through the second set of wheels where a similar process took place. The intercepted teleprinter messages were sent to Bletchley Park where they were examined by John Tiltman and his research group. Tiltman himself did the initial work, quickly identifying the messages as being encyphered using

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authorities walking around and eyeing each other like two mongrels who have just met,’ wrote Ted Hilles, one of the senior US Army officers at Bletchley Park. ‘Presumably and quite naturally, the ministries in London were reluctant to risk source’s neck sharing this precious information with an unproved and shadowy group

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’ with Travis and Menzies. But in mid-May, the two sides signed a groundbreaking accord. The BRUSA agreement set out a division of responsibilities between Bletchley Park and Arlington Hall. The British would control the interception and decryption of German radio messages while the Americans concentrated on Japanese. US liaison officers would

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via the British Special Liaison Units, the agreement said. Where an American officer is commander-in-chief, an American officer, properly trained and indoctrinated at Bletchley Park, will be attached to the unit to advise and act as liaison officer to overcome difficulties that may arise in regard to differences in language

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. ‘As defence against airborne operations he plans to cut communications between seaborne and airborne troops and to destroy them individually.’ The number of staff at Bletchley Park had been dramatically increased in anticipation of the Allied invasion of Europe, reaching a total of 7,000 by June 1944. Morag Maclennan had by

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who were authorised to receive it. The mobile Y Service units were already producing large amounts of information about the German reaction. In conjunction with Bletchley Park, they produced the position of one of the most important German headquarters, allowing the British to mount a series of air strikes that put paid

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the north and the Americans sweeping westwards along his southern flank, he risked becoming trapped in an Allied pincer movement. The Allies, fully informed by Bletchley Park of the German plans, ensured the initiative failed. As von Kluge’s counterattack faltered with its only route of retreat through a small gap south

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, heading for the Ruhr and, with the newspaper headlines trumpeting ‘Berlin by Christmas’, an unwarranted level of over-confidence set in. The intelligence supplied by Bletchley Park had proved invaluable to the Allied generals, giving them a comprehensive picture of their opponents’ positions and plans. But now the picture coming out of

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codebreaking operations and to ‘the special relationship’ between Britain and the United States. That ‘special relationship’ was in fact founded on the wartime cooperation between Bletchley Park and its US counterparts and the continued and extensive exchange of intelligence between Britain and the United States remains by far the most tangible evidence

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of its continued existence. A list of codebreakers, intelligence officers and administrators who made substantial contributions to the work at Bletchley Park would be bound to omit others who also deserved recognition. Welchman’s invention of the diagonal board for the Bombe, for example, was absolutely vital

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recruitment difficulties which provoked the letter to Churchill written by Welchman, Turing, Alexander and Milner-Barry meant that there was no room for passengers at Bletchley Park. In his history of the work on German Naval Enigma, Alexander said: The graphs and figures in the appendices give a statistical estimate of our

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107 Cheadle agrees to put 20 sets on Enigma: TNA PRO HW 14/4, Interception of Enigma Traffic, 20 March 1940. Page 108 Bletchley Park Control: Erskine & Smith (eds), Bletchley Park Codebreakers, pp.73–74. Pages 109–3 Joan Nicholls: Smith, Station X, p.49. Page 110 Blisters: Hinsley & Stripp, Codebreakers, p.91; Erskine

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, Hut Six Story, p.128. Page 243 Herivel: interview with John Herivel, May 1998. Page 244 Churchill on ‘no stone unturned’: Brian Oakley, The Bletchley Park War Diaries, Bletchley Park Trust, 2011, p.67. Page 245 Kennedy: Kennedy Diaries, 6 September 1941. Page 246 Lavell: interview with Ann Cunningham, May 1998. Pages 247–9

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Japanese course: US National Archives NARA RG457 OD4632, John H. Tiltman, Some Reminiscences. Page 387 Breaking of Japanese codes: Michael Smith, The Emperor’s Codes: Bletchley Park’s Role in Breaking Japan’s Secret Ciphers, Dialogue, London, 2010, passim. Pages 388–9 Sweetland: interview with Gladys Sweetland, February 2000. Page 389 Cohen

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and Enigma machine 1 1 and Hut 6 1, 2 and relations with Admiralty 1 differences with Denniston 1 and cultural life at Bletchley Park 1 and reorganisation of Bletchley Park 1 sets up ‘Women’s Committee’ 1 and Robinson machine 1 and relations with Americans 1, 2 Travis, Valerie 1 Treasure (Natalie Sergueiv

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German Defence Ministry, who sold Enigma manuals and key settings to the French intelligence service. Gustave Bertrand (BELOW with wife Mary), The codebreakers arrive at Bletchley Park in August 1939 (TOP). They include Dilly Knox (BOTTOM RIGHT), the only British codebreaker at this stage to have broken Enigma cyphers, and Alan Turing

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was crucial to the Double Cross deception operations that helped ensure the success of D-Day. Alastair Denniston (TOP LEFT) was the first head of Bletchley Park. Professor E. R. P. ‘Vinca’ Vincent (TOP CENTRE) worked on Italian naval cyphers. John Tiltman (TOP RIGHT) was the chief cryptographer from early 1942, breaking

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Chief Administrative Officer; John Barns, Naval Section; George McVittie, Head of Meteorological Cyphers in Air Section; Marjorie de Haan, Diplomatic Section; Alastair Denniston, Head of Bletchley Park. Seated (LEFT TO RIGHT): Edward Smith, Hut 3; Edmund ‘Scrounger’ Green, Naval Section; Barbara Abernethy, Denniston’s PA; Patrick Wilkinson, Naval Section; Alan Bradshaw, GC

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&CS Chief Administrative Officer. Two thirds of the people working at Bletchley Park were women. They included around 2,000 members of the Women’s Royal Naval Service, or Wrens, most of whom operated the Bombes (shown here

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at Bletchley, in this case a US Army master sergeant. Hut 6 dictated what links they needed the various British intercept stations to monitor via Bletchley Park Control, run by bright young men recruited from the main London banks. The breaking of the Abwehr (German Intelligence) four-rotor Enigma cypher (TOP LEFT

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2011. The cast of one of ‘Combine Ops’, the Christmas revues that made use of the many professional actors, actresses, musicians and writers working at Bletchley Park. The Lorenz SZ42 Schlüsselzusatz attachment used to encypher German military teleprinter communications. Robinson, the first computer used to help to break the Tunny encyphered teleprinter

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head of Hut 4, the naval codebreaking section. A US Navy WAVE operating one of the US Bombes, which from 1943 provided major support to Bletchley Park’s breaking of the Enigma four-rotor cypher machines. Copyright First published in Great Britain in 2011 by Biteback Publishing Ltd Westminster Tower 3 Albert

Decoding Organization: Bletchley Park, Codebreaking and Organization Studies

by Christopher Grey  · 22 Mar 2012

ciphers. Unlike most organizational studies, this book decodes, rather than encodes, the processes of organization and examines the structures, cultures and the work itself of Bletchley Park using archive and oral history sources. Organization theorists, intelligence historians and general readers alike will find in this book a challenge to their preconceptions of

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both Bletchley Park and organizational analysis. christopher grey is Professor of Organizational Behaviour at the University of Warwick. He was previously Professor of Organizational Theory at the University

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is the author of the bestselling student primer A Very Short, Fairly Interesting and Reasonably Cheap Book about Studying Organizations (2009, second edition). Decoding Organization Bletchley Park, Codebreaking and Organization Studies christopher grey cambridge university press Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo, Delhi, Tokyo, Mexico City Cambridge

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, Cambridge A catalogue record for this publication is available from the British Library Library of Congress Cataloguing in Publication data Grey, Christopher, 1964– Decoding organization : Bletchley Park, codebreaking and organization studies / Christopher Grey. pages cm Includes bibliographical references and index. ISBN 978-1-107-00545-7 (hardback) 1. Great Britain. Government

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, Madeleine Grey The fact is that the process of ‘cryptography’ would perhaps better be described as interpretation. Josh Cooper, Head of Air Section at Bletchley Park, 24 June 1941 Inherent in all good interpretations is the casting of new light on something that earlier has either escaped serious attention or been

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xv 1 47 1 The Making of Bletchley Park 51 2 The Making of Signals Intelligence at Bletchley Park 78 Part II Decoding Cultures 107 3 Pillars of Culture at Bletchley Park 113 4 Splinters of Culture at Bletchley Park 145 Part III Decoding Work 173 5 Making Bletchley Park Work 177 6 Understanding Bletchley Park’s Work 213 Conclusion: Reviving Organization

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midst, for which I am grateful. I also appreciate the assistance of Tim Robinson, the grandson of Alan Bradshaw, head of administration at Bletchley Park; Jonathan Byrne, the Bletchley Park Trust Roll of Honour administrator; and a c k n o w l e d g e m e n t s xiii Eunan

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Edward and Mrs Rebecca Simpson for explaining to me their work on Italian and Japanese ciphers at Bletchley Park. Christine Large, formerly Director of the Bletchley Park Trust, assisted with securing access to Bletchley Park veterans and to the Bletchley Park Trust Archives, where archivist Steve Ovens was helpful and welcoming. I am extremely grateful to the

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and Acronyms AD: Assistant Director (at BP) AI: Air Intelligence AM: Air Ministry ATS: Auxiliary Territorial Service (female branch of the army) BP: Bletchley Park BPT: Bletchley Park Trust BPTA: Bletchley Park Trust Archive BTMC: British Tabulating Machine Company C: Chief (i.e. Chief of SIS, correlating to the Director of GC & CS or, from 1944

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menace – or, if it were in Russia or Germany, shoot them out of hand. Yet that is in fact the precise organization of Bletchley Park. Now it happens that Bletchley Park has been successful – so successful that it has supplied information on every conceivable subject from the movement of a single mine sweeper to

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detail in order to illuminate how ‘organization’ is achieved or accomplished over time. This is a ‘decoding’ of organization in that, like the codebreakers of Bletchley Park, an interpretive analysis seeks an answer to the question ‘what does this mean?’. It entails considerable complexity; a complexity which is analytical, methodological and empirical

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. This lengthy opening chapter introduces this complexity by first introducing Bletchley Park, then indicating the problems and possibilities of organization studies. This is followed by a discussion of organization studies and history, and what the linkage of

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sense, an extremely exciting one, filled with human interest and historical significance. George Steiner may have been hyperbolic in claiming that ‘it looks as if Bletchley Park is the single greatest achievement of Britain during 1939–45, perhaps during [the twentieth] century as a whole’ (Steiner, 1983: 42), but that such

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is never completely knowable, never unmediated and always open to new knowledge and alternative interpretations. Nevertheless, there was (and indeed is) a place called Bletchley Park, there was a codebreaking operation there, the people who worked there existed and so on. I have already stated, and will do so again here

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organizational and administrative issues, with which those reminiscences are only indirectly concerned. To this end, via personal contacts, but also with the assistance of the Bletchley Park Trust (BPT), which put out a call to veterans for interviewees, I identified six respondents who represented a range of roles at BP. They

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accounts which fill out this picture are available (e.g. Smith, 1998; Page 2002, 2003; Hill, 2004; McKay, 2010). 3 Pillars of Culture at Bletchley Park introduction In this chapter I will analyse those features of BP culture which tended to homogenize experience and values; specifically war, secrecy and recruitment. The

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). The extreme secrecy at BP extended beyond vetting, constant reminders of security and rigid compartmentalization. Security officers also frequented public places in the area around Bletchley Park – staff were billeted in towns and villages for many miles around – checking for any signs of security breaches. An extract from one of these

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practice, peacetime secrecy is often overdone; special codewords and limited distributions become departments’ badges and means of protecting and extending their territory’ (Herman, 1996: 93). Bletchley Park was not, of course, a peacetime situation, but even so there are some indications of this. In a general way, mirroring Herman’s point, Commander

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now, note that it was part of an understanding that operational efficiency was affected by the provision of recreational facilities44, and indeed there was a Bletchley Park Recreational Club to co-ordinate these (McKay, 2010: 251). Again, though, there is a complexity. Some, perhaps many, at BP had no involvement with

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perhaps especially so in this case. Lewin (2008: 137) characterizes the situation thus: A honeycomb – this must be the final and dominating image of Bletchley Park: a honeycomb of cells some of which may appear to have functioned independently of the main structure. But distance and perspective allow the significant patterns

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co-ordinated. At the heart of this is a very longstanding issue in organization theory, namely the various ways that autonomy and control coexist. Thus: Bletchley Park . . . managed to combine organizational fluidity and an apparently anarchic disregard for hierarchy with success in getting its key areas under firm control. (Herman, 1996:

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[Hugh] Alexander, was another member, as was Harry Golombek, late chess correspondent of The Times. We returned home immediately, and before long found ourselves at Bletchley Park, where we remained for the duration. We had been recruited by Gordon Welchman, an old friend of mine at Cambridge. (Milner-Barry, 1993: 86) 

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have disappeared from view. Note that this is not an example of the mimetic isomorphism identified by neo-institutional theory (DiMaggio and Powell, 1991). Bletchley Park did not emulate legitimate forms of sigint organization but rather such a form was created there. I suggested briefly in Chapter 2 that the construction

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interconnected in ways both new and more extensive than in the past, especially as a result of the world wars (Cronin, 1991; Edgerton, 2011). Bletchley Park is a case in point, with a predominantly civilian organization becoming intimately enmeshed with the military, and as a result processes of conflict and negotiation

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s Most Secret Intelligence Agency. London: HarperPress. Alford, V. 1993. ‘Naval Section VI’ in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 68–70. Alvesson, M. 2004. Knowledge Work and Knowledge Intensive Firms. Oxford: Oxford University Press. Alvesson, M. and Deetz, S

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. New York: John Wiley. Bennett, R. 1993. ‘The Duty Officer, Hut 3’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 30–40. Bennett, R. 1994. Behind the Battle: Intelligence in the War with Germany, 1939– 1945. London: Sinclair-Stevenson Ltd

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of Bureaucracy. Chicago, IL: Chicago University Press. Bok, S. 1984. Secrets: On the Ethics of Concealment and Revelation. New York: Vantage Books. Bonsall, A. 2008. ‘Bletchley Park and the RAF Y service: Some recollections’, Intelligence and National Security 23: 827–41. Booth, C. and Rowlinson, M. 2006. ‘Management and organizational history: Prospects

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London: Bantam, pp. 342–69. Copeland, B. J. (ed.) 2004. The Essential Turing. Oxford: Oxford University Press. Copeland, B. J. 2006. Colossus. The Secrets of Bletchley Park’s Codebreaking Computers. Oxford: Oxford University Press. Clark, P. and Rowlinson, M. 2004. ‘The treatment of history in organization studies: Towards an “historic turn”?’ Business

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Granta Books. Eytan, W. 1993. ‘The Z watch in Hut 4, part II’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 57–60. Ferris, J. 2005. Intelligence and Strategy: Selected Essays. London: Routledge. Fetterman, D. 1998. Ethnography Step by Step.

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2nd edn. Thousand Oaks, CA: Sage. Filby, W. 1988. ‘Bletchley Park and Berkley Street’, Intelligence and National Security 3: 272–84. Fournier, V. and Grey, C. 2000. ‘At the critical moment: Conditions and prospects for critical

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Second World War. Liverpool: Liverpool University Press. Hayward, G. 1993. ‘Operation Tunny’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 175–92. He, Z-L. and Wong, P-K. 2004. ‘Exploration vs. exploitation: An empirical text of the ambidexterity hypothesis

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64. Hersey, P. and Blanchard, K. H. 1993. Management of Organizational Behaviour: Utilizing Human Resources. 6th edn. Englewood Cliffs, NJ: Prentice Hall. Hill, M. 2004. Bletchley Park People. Stroud, Gloucs.: Sutton Publishing Limited. Hinsley, H. 1993a. ‘Introduction: The influence of Ultra in the Second World War’ in Hinsley, H. and Stripp, A

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. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 1–13. Hinsley, H. 1993b. ‘The influence of Ultra’. Talk to the Computer Laboratory, Cambridge University, 19 October. www.cl

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H. 1993c. British Intelligence in the Second World War (abridged edn). London: HMSO. Hinsley, H. and Stripp, A. (eds.) 1993. Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press. Hinsley, H., Thomas, E., Ransom, C. and Knight R. 1979. British Intelligence in the Second World War (Volume 1). London: HMSO

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, G. 2001. Culture’s Consequences: Comparing Values, Behaviors, Institutions and Organizations across Nations. 2nd edn. Thousand Oaks, CA: Sage. Hogarth J. 2008. An Extraordinary Mixture: Bletchley Park in Wartime. Glasgow: Mansion Field, Zeticula. Hough, P. 2004. Understanding Global Security. London: Routledge. Inkpen, A. and Tsang, E. 2005. ‘Social capital, networks, and

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Age. Oxford: Oxford University Press. Littler, C. 1982. The Development of the Labour Process in Capitalist Societies. London: Heinemann. Luke, D. 2005. My Road to Bletchley Park. Cleobury Mortimer, Salop.: M. and M. Baldwin. Lummis, T. 1987. Listening to History. The Authenticity of Oral Evidence. London: Hutchinson Education. Maguire, S. 2008. ‘

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and National Security 1: 141. Milner-Barry, S. 1993. ‘Hut 6: Early days’ in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 89–99. Mintzberg, H. 1979. The Structuring of Organizations. Englewood Cliffs, NJ: Prentice-Hall International. Mone, M. and McKinlay,

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Paterson, M. 2007. Voices of the Codebreakers. Cincinnati, OH: David and Charles. Pearson, J. 2011. Neil Webster’s Cribs for Victory. The Untold Story of Bletchley Park’s Secret Room. Clifton-upon-Teme, Worcs.: Polperro Heritage Press. Perrow, C. 1986. Complex Organizations: A Critical Essay. 3rd edn. New York: Random House. Peters

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Oxford University Press. Stripp, A. 1993. ‘The Enigma machine. Its mechanism and use’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 83–8. Stodgill, R. M. 1974. Handbook of Leadership: A Survey of Theory and Research. New York: Free Press. Suddaby

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World War. Manchester: Manchester University Press. Taunt, D. 1993. ‘Hut 6: 1941–1945’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 100–12. Taylor, S. 2007. ‘The role of intelligence in national security’, in Collins, A. (ed.), Contemporary Security Studies. Oxford

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: Oxford University Press, pp. 248–69. Taylor. J. 2005. Bletchley Park’s Secret Sisters. Psychological Warfare in World War II. Dunstable, Beds.: The Book Castle. Taylor. J. 2009. Bletchley and District at War. People and Places

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of Lancelot Patrick Wilkinson KCAC/ PP/LPW. Wilkinson, P. 1993. ‘Italian Naval decrypts’, in Hinsley, H. and Stripp, A. (eds.), Codebreakers. The Inside Story of Bletchley Park. Oxford: Oxford University Press, pp. 61–7. Willmott, H. 2011. ‘“Institutional work” for what? Problems and prospects of institutional theory’, Journal of Management Inquiry 20

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pay 59 recruitment of 132 on Travis 198 Bismarck, sinking of 115–116 Black, A. 221 Blacker, Carmen 196 Blau, P. 7 Bletchley Park Recreational Club 138 Bletchley Park Trust (BPT) 27 Bletchley Park Trust Archive (BPTA) 23 Blitz myth of 117 spirit of 116 Blunt, Antony 207 bombe operations rooms factory methods in 188, 215

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social discontent 117 Somerset House 60 Source Boniface 88 Soviet Union 128 ciphers 45 Spanish ciphers 45 Special Liaison Units (SLUs) 203–205 staff (at Bletchley Park) accommodation 55–56, 150–151, 155–156 age 161–163 ‘Chiefs and Indians’, distinction between 156–165 civilian composition 55, 60 civilian and military,

The Myth of Artificial Intelligence: Why Computers Can't Think the Way We Do

by Erik J. Larson  · 5 Apr 2021

effort to help defeat Nazi Germany in the Second World War, and it was his ideas about computation that helped turn the tide of war. BLETCHLEY PARK Bletchley Park, situated unobtrusively in a small town out of the path of bombs falling in London and metropolitan Britain, was a research facility set up to

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out how to design a Bob-Machine. She decides to begin with a machine that’s as smart as Hugh Alexander—Turing’s colleague at Bletchley Park and a one-time chess champion of Cambridge. Hugh Alexander was smart—really smart. He played championship-level chess, and although he did not summon

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initial (and also ciphered) instructions for deciphering communications. 6. See Andrew Hodges’s excellent biography of Turing for in-depth discussion of the role of Bletchley Park and Turing in World War II. Andrew Hodges, Alan Turing: The Enigma (New York: Vintage, 1992). 7. Joseph Brent, Charles Sanders Peirce: A Life (Bloomington

Between Silk and Cyanide: A Codemaker's War, 1941-1945

by Leo Marks  · 1 Jan 1998  · 677pp  · 195,722 words

with the Americans. The course was due to last for eight weeks, at the end of which the students would be graded and sent to Bletchley Park, which was Tiltman's workshop and the headquarters of the cryptographic department, known in the trade as MI8. Fifteen new pupils, including two young women

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't even get myself reported! Determined to try again, I wondered how I could reach Lord Selbourne or go even higher, to Colonel Tiltman of Bletchley Park. He called me back in mid-speculation, and, as casually as any Irishman can, said that he didn't wish me to misconstrue his leniency

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, sir.' He asked whose advice I'd like if I could get it. 'If I could get it, sir, Colonel Tiltman's. He works at Bletchley Park.' 'Does he indeed? Have you met him?' 'No, sir. But I saw him once in a corridor at the code-breaking school.' 'Why didn't

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I couldn't believe what I now heard him saying. Tomorrow I was to discuss the future of WOKs with Colonel Tiltman of Bletchley Park. The Colonel Tiltman of the Bletchley Park. The cryptographic supremo. I was to keep the whole morning free for him. No problem!—I'd keep my whole coding life

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does his voice have an edge to it? 'My second question's this. Have you discussed Gift-horse with John Tiltman or anyone else at Bletchley Park?' He could tell at a glance that I hadn't. 'Did you think it wouldn't interest them—or that it was none of their

The Code Book: The Science of Secrecy From Ancient Egypt to Quantum Cryptography

by Simon Singh  · 1 Jan 1999

from places such as Newnham College and Girton College, Cambridge. The new recruits were not brought to Room 40 in London, but instead went to Bletchley Park, Buckinghamshire, the home of the Government Code and Cypher School (GC&CS), a newly formed codebreaking organization that was taking over from Room 40

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. Bletchley Park could house a much larger staff, which was important because a deluge of encrypted intercepts was expected as soon as the war started. During the

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the greater availability of radios in the Second World War could result in the transmission of two million words a day. At the center of Bletchley Park was a large Victorian Tudor-Gothic mansion built by the nineteenth-century financier Sir Herbert Leon. The mansion, with its library, dining hall and ornate

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to exploit the information. Hut 8 specialized in the naval Enigma, and they passed their decrypts to Hut 4 for translation and intelligence gathering. Initially, Bletchley Park had a staff of only two hundred, but within five years the mansion and the huts would house seven thousand men and women. Figure 44

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In August 1939, Britain’s senior codebreakers visited Bletchley Park to assess its suitability as the site for the new Government Code and Cypher School. To avoid arousing suspicion from locals, they claimed to be

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the opulence of the Cambridge quadrangle to the Crown Inn at Shenley Brook End. Each day he cycled 5 km from Shenley Brook End to Bletchley Park, where he spent part of his time in the huts contributing to the routine codebreaking effort, and part of his time in the Bletchley think

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ranged over a vast area of the exact sciences.” However, everything at the Government Code and Cypher School was top secret, so nobody outside of Bletchley Park was aware of Turing’s remarkable achievement. For example, his parents had absolutely no idea that Alan was even a codebreaker, let alone Britain’s

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one word missing when the 12 minutes had expired. A few weeks later, all six were interviewed by military intelligence and recruited as codebreakers at Bletchley Park. Kidnapping Codebooks So far in this chapter, the Enigma traffic has been treated as one giant communications system, but in fact there were several distinct

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of the ocean routes and the free approach and entry to our ports.” The Polish experience and the case of Hans-Thilo Schmidt had taught Bletchley Park that if intellectual endeavor fails to break a cipher, then it is necessary to rely on espionage, infiltration and theft in order to obtain the

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who had infiltrated the Kriegsmarine. The breaking of Enigma was considered impossible and inconceivable. The Anonymous Cryptanalysts As well as breaking the German Enigma cipher, Bletchley Park also succeeded in deciphering Italian and Japanese messages. The intelligence that emerged from these three sources was given the codename Ultra, and the Ultra Intelligence

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. Knowledge of this kind makes your own planning less tentative and more assured, less harrowing and more buoyant.” It has been argued, albeit controversially, that Bletchley Park’s achievements were the decisive factor in the Allied victory. What is certain is that the Bletchley codebreakers significantly shortened the war. This becomes evident

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to disabuse them of this belief, and routinely deciphered their secret communications in the years that followed. Meanwhile, the Government Code and Cypher School at Bletchley Park was closed and the thousands of men and women who had contributed to the creation of Ultra were disbanded. The bombes were dismantled, and every

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been abed and have no reason to think ourselves accurs’t for having been where we were.” After three decades of silence, the secrecy over Bletchley Park eventually came to an end in the early 1970s. Captain F.W. Winterbotham, who had been responsible for distributing the Ultra intelligence, began to badger

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concealing the fact that Britain had broken it. The intelligence services reluctantly agreed, and permitted him to write a book about the work done at Bletchley Park. Published in the summer of 1974, Winterbotham’s book The Ultra Secret was the signal that Bletchley personnel were at last free to discuss their

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tackling menial ciphers at a minor intelligence unit in Boxmoor, near Hemel Hempstead. It is not clear why such a brilliant mind was excluded from Bletchley Park, but as a result he was completely unaware of the activities of the Government Code and Cypher School. Until the publication of Winterbotham’s book

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information. The government forbade them to talk about their work, and their unique contribution was not made public. Just like Turing and the cryptanalysts at Bletchley Park, the Navajo were ignored for decades. Eventually, in 1968, the Navajo code was declassified, and the following year the code talkers held their first reunion

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. The Rosetta Stone, as it became known, appeared to be the equivalent of a cryptanalytic crib, just like the cribs that helped the codebreakers at Bletchley Park to break into Enigma. The Greek, which could easily be read, was in effect a piece of plaintext which could be compared with the demotic

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Linear B since the 1930s. During the war he had spent time as a cryptanalyst in Alexandria, where he broke Italian ciphers, before moving to Bletchley Park, where he attacked Japanese ciphers. After the war he tried once again to decipher Linear B, this time employing the techniques he had learned while

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and Bob Go Public During the Second World War, British codebreakers had the upper hand over German codemakers, mainly because the men and women at Bletchley Park, following the lead of the Poles, developed some of the earliest codebreaking technology. In addition to Turing’s bombes, which were used to crack the

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center at Dollis Hill, North London, Flowers took Newman’s blueprint and spent ten months turning it into the Colossus machine, which he delivered to Bletchley Park on December 8, 1943. It consisted of 1,500 electronic valves, which were considerably faster than the sluggish electromechanical relay switches used in the bombes

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fact that it was programmable. It was this fact that made Colossus the precursor to the modern digital computer. Colossus, as with everything else at Bletchley Park, was destroyed after the war, and those who worked on it were forbidden to talk about it. When Tommy Flowers was ordered to dispose of

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, public key cryptography was originally invented at the Government Communications Headquarters (GCHQ) in Cheltenham, the top-secret establishment that was formed from the remnants of Bletchley Park after the Second World War. This is a story of remarkable ingenuity, anonymous heroes and a government cover-up that endured for decades. The story

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this book I have had the privilege of meeting some of the world’s greatest living codemakers and codebreakers, ranging from those who worked at Bletchley Park to those who are developing the ciphers that will enrich the Information Age. I would like to thank Whitfield Diffie and Martin Hellman, who took

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Rothemund, Jim Gillogly, Paul Leyland and Neil Barrett. Derek Taunt, Alan Stripp and Donald Davies kindly explained to me how Bletchley Park broke Enigma, and I was also helped by the Bletchley Park Trust, whose members regularly give enlightening lectures on a variety of topics. Dr. Mohammed Mrayati and Dr. Ibrahim Kadi have been

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the importance of cryptography. In particular, he dramatically describes the “pinches” from U-boats which helped the codebreakers at Bletchley Park. Hinsley, F.H., and Stripp, Alan (eds), The Codebreakers: The Inside Story of Bletchley Park (Oxford: Oxford University Press, 1992). A collection of illuminating essays by the men and women who were part

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British Channel 4 TV series of the same name, containing anecdotes from those who worked at Bletchley Park, otherwise known as Station X. Harris, Robert, Enigma (London: Arrow, 1996). A novel revolving around the codebreakers at Bletchley Park. Chapter 5 Paul, Doris A., The Navajo Code Talkers (Pittsburgh, PA: Dorrance, 1973). A book devoted

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collection of sites relating to the Beale ciphers. The Beale Cypher and Treasure Association is currently in transition, but it hopes to be active soon. Bletchley Park http://www.cranfield.ac.uk/ccc/bpark/ The official Web site, which includes opening times and directions. The Alan Turing Homepage http://www.turing.org

War of Shadows: Codebreakers, Spies, and the Secret Struggle to Drive the Nazis From the Middle East

by Gershom Gorenberg  · 19 Jan 2021  · 555pp  · 163,712 words

Service Henry Stimson: Republican politician, secretary of state under Herbert Hoover, secretary of war under Franklin Roosevelt Sumner Welles: undersecretary of state BRITAIN Jean Alington: Bletchley Park translator Claude Auchinleck: general, British commander in chief, Middle East Ralph Bagnold: army officer and explorer, founder and commander of the Long Range Desert Group

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Egypt—incomplete, inexperienced, and untrained for desert fighting—was deployed to stop an Italian invasion.61 4 THE MACHINE IS THE FUTURE Autumn 1939. Bletchley Park–Warsaw–Paris. A LINE OF trees protected the country estate from the rumble of the trains passing by on the London-Scotland and Cambridge-Oxford

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Hinsley turned a crank on an old-fashioned telephone that connected him to the Operational Intelligence Center at the British Admiralty. Hinsley’s job at Bletchley Park was tracking the wireless traffic of the German navy. He read the call letters of intercepted messages, and their frequencies, and information on the

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that Enigma was being read and they cracked down, making sure everyone using it followed the rules, the game was up. So even when Bletchley Park sent out information read directly from German communications, it disguised the intelligence as reports from a spy. Yet British commanders and ministry officials didn’t

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Like German merchant ships reporting to the army, the change in Enigma methods was an omen, an encoded message about the future. No one at Bletchley Park decrypted it. “THE WITHDRAWAL FROM southern Norway is not comparable to the withdrawal from Gallipoli,” Neville Chamberlain told the House of Commons. The prime minister

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machines. They used a cipher method known as transposition: rearranging the letters of the original text, according to a pattern that shifted daily. At Bletchley Park, John Tiltman headed a section that had been breaking the police cipher since the start of the war. The main problem was intercepting messages, which

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same messages, picked up by American antennae, were being decoded and translated in Washington. The improvised Purple machine that the American officers had brought to Bletchley Park made it possible for Stewart Menzies to hand those messages, decoded and translated, to Winston Churchill. If Churchill had any doubt about why an embassy

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reliable, pained source was almost certainly Cunningham’s older brother Andrew, commander of the Mediterranean fleet.16) Auchinleck had his own very reliable source. From Bletchley Park came a stream of deciphered messages that the Luftwaffe in Libya was desperately short of fuel. It was running out of tires for its fighters

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rumpled uniform and horn-rimmed glasses, now had more administrative work and less time for making sure that British codes and ciphers were secure. Yet Bletchley Park’s successes at breaking Axis ciphers were seeping into its commanders’ nightmares, in which Germans and Italians were breaking British codes. If this was indeed

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rather than “particularly reliable.” The implicit question was: Why the difference? There was one clue, handwritten at the bottom on an internal copy saved in Bletchley Park, absent from the copy given to Churchill and the paraphrase sent to Cairo. The notation was an abbreviation for “Chaffinch II.” Chaffinch was Hut 6

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the simpler, low-grade ciphers used by German and Italian units. The Heliopolis station forwarded any Enigma material picked up in the Middle East to Bletchley Park. It sent intercepted diplomatic traffic to Denniston’s operation in London. Another intercept station operated in Palestine, at the British base at Sarafand southeast of

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in the Pacific, cited “reliable sources in the Naval Intelligence” as saying that “advance information enabled the American Navy” to strike the Japanese fleet. Bletchley Park’s liaison to OP-20-G sent a copy of the news story from Washington to Britain’s naval intelligence director, Rear Admiral John Godfrey

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colonel. But Kappler remembered, and did not forgive.32 Act IV “THE MATTER BECOMES OF EXTREME URGENCY” 1 COMPROMISED June 10–16, 1942. Bir Hakeim–Bletchley Park–Washington. “AT NOON JUNE 10th left Libya,” Colonel Fellers wrote that same evening from Cairo. The battle had turned into a stalemate, he radioed Washington

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enemy intelligence was Margaret Storey.8 The evaluation would be asserted, and cast again into doubt, on the top-secret telegraph channel between Washington and Bletchley Park. Sometime that night, while Koenig and his soldiers were breaking out of Bir Hakeim, John Tiltman wired William Friedman at the Signal Intelligence Service.

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, Tiltman referred to content. His answer was cosigned by Solomon Kullback, one of Friedman’s original protégés, still a senior American codebreaker, who was visiting Bletchley Park. “Leakage includes a particular message of April 16th… for Maxwell,” they wrote, pointing to the certain evidence of the complaint about RAF negligence. “[We]

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are listening to them. If anything was more dangerous than the leak itself, it was a leak about an investigation.11 It could endanger everything Bletchley Park had accomplished. The cables were marked for urgent handling. Yet the conversation was terrifyingly slow, delayed by differences in time zones and when people

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best not to bother Churchill with “this alternative form of leakage.”16 DESPITE HIS FRIENDSHIP with Friedman, Tiltman stepped aside in favor of the “bulldog.” Bletchley Park director Edward Travis wrote the next cables to Friedman. “Our source is the highest German security system,” Travis said, meaning Enigma. The German message from

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Enigma. The other appellations, such as “particularly reliable source,” came from air force messages. Travis was keeping his telegram condensed. But the pattern seemed clear. Bletchley Park was picking up messages from two different branches of the German military that depended on the same source. As breaking Chaffinch got quicker and more

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corps was desperately short of trucks for supplies. These shards of information from the Libyan desert came in messages deciphered in the distant chill of Bletchley Park. Rommel had given orders not to fire artillery against tank attacks since “the ammunition situation is strained.” Only antitank guns should be used, he

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supply route from sub-Saharan Africa to Asia would remain open.51 The leak was more dangerous than Churchill, Menzies, or anyone at Bletchley Park knew. But what Bletchley Park could see through its peephole was frightening enough. The day after Travis sent Friedman his examples of what the Good Source was revealing,

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song of a seemingly perfect source drew Rommel to El Alamein and abandoned him. After that, Auchinleck acknowledged, the “most secret sources” overheard at Bletchley Park gave him the decisive advantage.68 Mussolini would not ride his white charger through Cairo; Rauff would not bring his gas vans to Jerusalem; Rommel

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, Claude Auchinleck.2 Montgomery did know Rommel’s thoughts, and his fears, but not from communing with his portrait. In July, a team from Bletchley Park arrived in Heliopolis, outside Cairo, and began deciphering the Scorpion and Phoenix keys of Enigma. Putting the team in Egypt eliminated having to send locally

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worked. The attachés’ formal style had made his work easier. Each message contained the words “I have the honor to report to Your Excellency that…” Bletchley Park recruited some young classics scholars from Cambridge and gave them an intensive, five-month course in Japanese. They took over mastering the Japanese military attaché

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she discovered and that give the clearest picture of Manfredi Talamo and his Sezione Prelevamento. Ralph Erskine was always ready to share his expertise on Bletchley Park and to help with archival documents. Christos Triantafyllopoulos was a constant source of insight and material on codebreaking. Andreas Biermann happily provided access to documents

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a workshop on writing history. He lives in Jerusalem. Bibliography ARCHIVES AND PRIVATE PAPERS Archivio dell’Ufficio Storico dello Stato Maggiore dell’Esercito, Rome, Italy Bletchley Park Archive, Milton Keynes, UK Churchill Archive (digitalized papers of Winston Churchill), www.churchill archive.com Churchill Archives Centre, Churchill College, Cambridge, UK Columbia University

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.co.uk/arts-entertainment/book-review-no-more-an-enigma-codebreakers-the-inside-story-of-bletchley-park-ed-f-h-hinsley-alan-1462732.html. “Architectural History Report of Bletchley Park.” Bletchley Park Research. www.bletchleyparkresearch.co.uk/research-notes/architectural-history-report-bletchley-park. Arielli, Nir. “Beyond ‘Mare Nostrum.’ Ambitions and Limitations in Fascist Italy’s Middle

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Alamein. London: Jonathan Cape, 2004. Kindle. Batey, Mavis. Dilly: The Man Who Broke Enigmas. London: Biteback, 2017. Kindle. . From Bletchley with Love. Milton Keynes, UK: Bletchley Park Trust, 2008. Bauer, Yehuda. From Diplomacy to Resistance: A History of Jewish Palestine, 1939–1945. New York: Atheneum, 1973. Beaton, Cecil. Near East. London: B

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Vashem. www.yadvashem.org/yv/en/exhibitions/besa/index.asp. Bierman, John. The Secret Life of Laszlo Almasy: The Real English Patient. London: Penguin, 2005. Bletchley Park: Home of the Codebreakers. Briscombe Port, UK: Pitkin Publishing, 2015. Bosworth, R. J. B. Mussolini. London: Bloomsbury, 2014. Bouchnik-Chen, Raphael G. “Palestinian Arab

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Hinges of Fate.” H-Diplo Article Review No. 199. November 4, 2008. www.h-net.org/~diplo/reviews/PDF/Ferris-Jenner.pdf. . “The Road to Bletchley Park: The British Experience with Signals Intelligence, 1892–1945.” Intelligence and National Security 17, no. 1 (2002): 53–84. Fitzgerald, Penolope. The Knox Brothers. London:

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173. Gordon, John W. The Other Desert War: British Special Forces in North Africa, 1940–1943. New York: Greenwood Press, 1987. Greenberg, Joel. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence. London, Frontline, 2014. Gross, Kuno, Michael Rolke, and András Zboray. Operation Salam: Laszlo Almasy’s Most Daring Mission in the

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John. Herivelismus and German Military Enigma. Cleobury Mortimer, UK: M&M Baldwin, 2008. Hinsley, F. H., and Alan Stripp, eds. Codebreakers: The Inside Story of Bletchley Park. Oxford: Oxford University Press, 1993. Hinsley, F. H., et al. British Intelligence in the Second World War: Its Influence on Strategy and Operations. Vol. 1

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History, 1999. McBride, Barrie St. Clair. Farouk of Egypt: A Biography. London: Robert Hale, 1967. McKay, Sinclair. The Secret Life of Bletchley Park. London: Aurum, 2011. . The Lost World of Bletchley Park. London: Aurum, 2013. Miner, Samuel. “Planning the Holocaust in the Middle East: Nazi Designs to Bomb Jewish Cities in Palestine.” Jewish Political

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War. New Haven, CT: Yale University Press, 2008. . Righteous Victims. New York: Vintage, 2001. Morrison, Kathryn A. “‘A Maudlin and Monstrous Pile’: The Mansion at Bletchley Park, Buckinghamshire.” Transactions of the Ancient Monuments Society 53 (2009): 81–106. Morsy, Laila. “Farouk in British Policy.” Middle Eastern Studies 20, no. 4 (1984): 193

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Post WEBSITES Alan Turing: The Enigma: www.turing.org.uk American President: millercenter.org/the-presidency Ancestry: ancestry.co.uk BBC: www.bbc.co.uk Bletchley Park: www.bletchleypark.org.uk Bonner Fellers: www.bonnerfellers.com Central Intelligence Agency Library: www.cia.gov/library Charles Lindbergh: www.charleslindbergh.com Christos Military and

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CORRESPONDENCE Alvarez, David Avnery, Uri Denzer, Tempe Downes, Dorelle Flemons, Pauline Gouri, Haim Hodsdon, James Milvain, Lottie Swinhoe, Nikki Wiggin, Nicholas Fenn Notes ABBREVIATIONS BPA: Bletchley Park Archive CA: Churchill Archive CD: Galeazzo Ciano, Diary 1937–1943 (New York: Enigma, 2002); by date CUOH: Columbia University Oral History Research Office DFP: Documents

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Declares War on Germany”). 5. Gordon Welchman, The Hut Six Story: Breaking the Enigma Codes (Harmondsworth, UK: Penguin, 1982), 7–13; Joel Greenberg, Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence (London: Frontline, 2014), 5–14, and front jacket cover photo of Welchman. 6. BPA, Patrick Wilkinson, Facets of a Life

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2018). ACT I. CHAPTER 4. THE MACHINE IS THE FUTURE 1. Wilkinson, Facets, 132. 2. Welchman, Hut Six, 31; “Architectural History Report of Bletchley Park,” chap. 5.1, Bletchley Park, www.bletchleypark.org.uk/resources/filer.rhtm/683101/eh+-+chapter+5.1.pdf (accessed Mar 15, 2016); Mavis Batey, Dilly: The Man Who Broke

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Enigmas (London: Biteback, 2017), loc.1682, Kindle; Kathryn A. Morrison, “‘A Maudlin and Monstrous Pile’: The Mansion at Bletchley Park, Buckinghamshire,” Transactions of the Ancient Monuments Society 53 (2009): 81–106. 3. Batey, Dilly, loc. 1670 ff.; Welchman, Hut Six, 31; Michael Smith, The Secrets

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of Station X (London: Biteback, 2011), loc. 500ff., Kindle; Wilkinson, Facets, 132; Sinclair McKay, The Secret Life of Bletchley Park (London: Aurum, 2010), 12; Morrison, “Maudlin and Monstrous,” 103–104. 4. Smith, Station X, loc. 480ff.; Batey, Dilly, loc.1682; Richard Aldrich, GCHQ: The

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/Portals/70/documents/news-features/declassified-documents/friedman-documents/reports-research/FOLDER_528/41771299081038.pdf (accessed February 3, 2019). 9. John Ferris, “The Road to Bletchley Park: The British Experience with Signals Intelligence, 1892–1945,” Intelligence and National Security 17, no. 1 (2002): 75. 10. “U.S. Entry into World War

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1940–1943 (Kew, Richmond, Surrey, UK: National Archives, 2008), 14. 7. “Architectural History Report of Bletchley Park,” chap. 7, Bletchley Park, www.bletchleyparkresearch.co.uk/research-notes/architectural-history-report-bletchley-park (accessed March 12, 2016); Smith, Station X, loc. 600ff.; Bletchley Park: Home of the Codebreakers (Briscombe Port, UK: Pitkin Publishing, 2015). 8. Stuart Milner-Barry, “Hut

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Enigma intelligence in the British victory in the Battle of Britain. Welchman (Hut Six, 120) and others (e.g., Calvocoressi, Top Secret, 72) state that Bletchley Park deciphered almost immediately Hitler’s September 17, 1940, decision to postpone Operation Sea Lion, the planned invasion of Britain, a postponement that became permanent. However

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of Eisenhower’s relationship with Kay Summersby, which remained a subject of controversy long after their deaths. 21. Brigadier John Tiltman, 43–45; Michael Smith, “Bletchley Park, Double Cross and D-Day,” in Smith and Erskine, Action This Day, 280–281; Maurice Miles, “Japanese Military Codes,” in Hinsley and Stripp, Codebreakers,

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Axis airfields. This was a rare case of information from a Fellers cable being sent in the Italian naval code, which the Naval Section at Bletchley Park tracked closely. 53. Sullivan, “Manfredi Talamo”; John Foot, “Via Rasella, 1944: Memory, Truth, and History,” Historical Journal 43 (2000): 1173–1181; Alessandro Portelli, The

GCHQ

by Richard Aldrich  · 10 Jun 2010  · 826pp  · 231,966 words

the UK Adastral Park, Martlesham Heath, Suffolk, BT Research Laboratories, 1975– Beaumanor/Garats Hay, Leic., post–war Army sigint base & Special Projects Agency, 1945–94 Bletchley Park; this remained a sigint training site after the war until 1985 Boddington, Glos, (RAF) military communications unit working with GCHQ Bower, Bowermadden near Wick, listening

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Waddington, Lincs, (RAF) Nimrod R1s of 51 Squadron since 1995 Watton, Norfolk, (RAF) Central Signals Establishment, 192 Squadron 1945–63 Whaddon Manor, Bucks, outstation of Bletchley Park, closed 1946 Wyton, Cambridgeshire, (RAF) Comets and Nimrod R1s of 51 Squadron, 1963–95 London Chester Road, Borehamwood, (GCHQ/SIS) factory making radio microphones in

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of the Second World War. By contrast, Government Communications Headquarters, or ‘GCHQ’, is a term of uncertain origin. Originally developed as a cover name for Bletchley Park in late 1939, it competed for usage with several other designations, including ‘BP’, ‘Station X’ and indeed ‘GC&CS’. However, the Government Code and

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is the last great British secret. For more than half a century, Government Communications Headquarters – the successor to the famous wartime code-breaking organisation at Bletchley Park – has been the nation’s largest and yet most elusive intelligence service. During all of this period it has commanded more staff than the Security

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construction project in Europe. Today, it is more important than ever – yet we know almost nothing about it.2 By contrast, the wartime work of Bletchley Park is widely celebrated. The importance of decrypted German communications – known as ‘the Ultra secret’ – to Britain’s victory over the Axis is universally recognised.

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concluded that global sigint coverage was indispensable to the Western allies. By the mid-1950s, Britain’s code-breakers had abandoned their nissen huts at Bletchley Park for new accommodation in Cheltenham, the distinctive radomes and satellite dishes of which became an integral part of the Cold War landscape.14 Ironically, the

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former code-breaker recalls that the main house was soon ‘too small for more than a handful of top brass and their immediate acolytes’. So Bletchley Park’s considerable garden, with its rosebeds and delightful maze, gradually disappeared beneath the expanding penumbra of temporary structures.19 The shadow of the bomber even

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As the operation gained momentum, other nearby premises were absorbed. Elmers School, a neighbouring boys’ boarding establishment, was requisitioned for the GC&CS Diplomatic Sections. Bletchley Park was Admiral Sir Hugh Sinclair’s last bequest to Britain’s sigint community. Through the early autumn of 1939 it was clear that he was

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bricks left by some workmen alongside Hut Six and gave an impromptu speech – delivered with deep emotion – about the value of Bletchley Park to the war effort.33 Unbeknown to Churchill, Bletchley Park was in deep crisis. This was partly due to its rapid growth, and partly to the uncertain institutional boundaries that were

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the task.’34 There was also a general resources problem. Having made significant inroads into German Enigma traffic, there were simply not enough staff at Bletchley Park to process the vast torrents of accessible German communications. Neither Alastair Denniston nor his deputy, Edward Travis, had the pull in Whitehall to overcome the

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work of attacking diplomatic codes often had to be coordinated with discreet telephone taps on the foreign embassies in London. The military side remained at Bletchley Park. This did not resolve the heated arguments about who controlled the spoils of GC&CS, but it did address the immediate accommodation problems, and

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no better analogy than the schoolboy with his stamp collection. GC&CS, discussing intelligence cooperation with the Russians in 19431 The most secret aspect of Bletchley Park’s wartime work was its dealings with friends and allies. Many have pondered whether the British attacked Soviet codes and cyphers during the Second World

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to Ultra. In late 1942, Anthony Blunt, another high-grade Soviet agent, was designated one of the two MI5 liaison officers who worked closely with Bletchley Park.28 Anxiety about KGB agents and subversion was yet another reason that the British kept working on Soviet traffic. Monitoring stations, notably the Metropolitan Police

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their hopes of keeping control over the processing of Ultra material derived from Luftwaffe and German Army traffic. Nigel de Grey, the Deputy Director of Bletchley Park, was apoplectic at the possibility of the Americans being allowed to duplicate further British work on Enigma. However, a US Army code-breaker based

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sigint alliances. The exigencies of war had broken Britain’s cryptographic monopoly on Ultra. However, Ultra was a military system, representing the core work of Bletchley Park. There is no evidence that Britain and the United States concluded an overarching treaty on diplomatic or commercial sigint, the material that GC&CS worked

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a collapsing Third Reich, and Axis sigint material was the treasure that was most actively sought. A joint Anglo-American planning group began consulting with Bletchley Park about what material it wished to scoop from an occupied Germany. By early 1945, Intelligence Assault Units were moving into Germany alongside the fighting elements

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of Allied formations, looking for all kinds of top-secret German experimental weapons. Bletchley Park despatched its own Target Intelligence Committee teams, known as ‘TICOM teams’, made up of a mixture of British and American personnel, to seek out cryptographic

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who headed TICOM Team 6. This group included William Bundy, later US Assistant Secretary of State under President Lyndon B. Johnson, and Geoffrey Stevens from Bletchley Park. In April 1945 they pushed into southern Germany at Magdeburg, near Leipzig, and took control of a castle at Burgscheidungen which had recently been the

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priceless sigint secrets from the Germans, the Italians and the Japanese. They were also concerned with protecting Britain’s own secret communications. Until late 1943, Bletchley Park regarded weak security as a problem restricted to Britain’s allies. But the ability to read German messages had revealed a number of unexpected security

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had now capitulated, and captured Italian code-breakers revealed their successes against British codes. Captain Edmund Wilson, who helped to look after cypher security at Bletchley Park, held prolonged ‘conversations’ with Commander Cianchi, head of the Italian Cryptographic Bureau in Rome, and his staff during late 1943. Wilson explained that he

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a spot check of twelve departments around Whitehall, and found that few were taking cypher security seriously. Britain needed a decent operational security section at Bletchley Park, and a proper supervisory board with teeth.27 No cypher system, Chitty warned, was unbreakable. Britain’s most sensitive material was sent by one-

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they had extended their authority over the design and production of all British cypher machines, with Gordon Welchman their chief technical adviser.31 During 1944, Bletchley Park offered an impressive technical solution to worries about cypher security. It fielded a new and rather superior cypher machine called ‘Rockex I’ that produced what

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1944, SIS’s Section VIII had expanded considerably and was taking on new customers. With its new Rockex machines, it was carrying some traffic for Bletchley Park, typically from Canada, together with secret messages for the Special Operations Executive which conducted sabotage. The Foreign Office was now looking at this efficient radio

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have forced the faster development of other forms of intelligence, such as aerial reconnaissance.40 Peter Calvocoressi, another distinguished historian who spent the war at Bletchley Park, has dismissed Hinsley’s assertions as ‘silly’.41 Some propositions can however be advanced with confidence. Ultra and other kinds of sigint contributed hugely to

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CS’ and ‘BP’ to the rather grander cover name of ‘Government Communications Headquarters’, or ‘GCHQ’, which had been in intermittent use since early 1940.43 Bletchley Park had already taken some important strides towards becoming a fully-fledged intelligence service. Peter Calvocoressi, one of its distinguished wartime denizens, recalls that in its

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-East Asia. The sheer pressure of wartime exigency forced rapid and logical developments that might otherwise have taken decades.44 Another massive achievement was that Bletchley Park and its diplomatic equivalent at Berkeley Street in London were properly ‘integrated’, mixing up staff from the three armed services and civilians. This was

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London. Working alongside GC&CS were the listening units of the armed forces, known as the Y services. Although these fed high-grade material to Bletchley Park, they also worked on low-grade material for their own purposes. Often considered ‘poor relations’, they derived their intelligence either from listening in to

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of these locations would continue as sigint sites after August 1945.47 All of them were symptomatic of an industrial revolution in secret intelligence: both Bletchley Park and the outstations operated like factories, with three gruelling shifts each day. At a deeper level, there had also been a social revolution in

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members of international chess teams or wrestling with obscure mathematical problems in Cambridge colleges, were now focused on intelligence. Remorselessly logical, they could see that Bletchley Park was the intelligence machine of the future. Moreover, they were outsiders, with no sense of bureaucratic anxiety and no fear of the ‘Establishment’. They

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one of a number of rising British diplomats who were temporarily attached to intelligence duties during the war, noticed this dramatic change. The organisations like Bletchley Park had been forced to recruit widely from industry and the universities to fill their ranks, so they had forward-looking staff who brought with them

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strong sense of identity, a large budget and predatory designs on other agencies. Three key figures were instrumental in this: Gordon Welchman, the man behind Bletchley Park’s intelligence processing centre; Harry Hinsley, who would serve as the ‘sherpa’ for the Anglo–American–Commonwealth sigint summits after 1945; and Edward Crankshaw,

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outer fringes of north-west London, close to Harrow and Pinner. The precise location was Eastcote, which had been used as a wartime outstation of Bletchley Park. It was also close to Dollis Hill, where the laboratories of the Post Office Research Department had built the remarkable ‘Colossus’ computer. Together with

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‘signals intelligence’ was forbidden.66 Between 1945 and 1948 the term ‘GCHQ’ was used interchangeably with both ‘London Signals Intelligence Centre’ and ‘Station X’.67 Bletchley Park was now an empty shell in the Bedfordshire countryside. Barbara Abernethy, who had worked as Denniston’s personal assistant, recalls: ‘We just closed down the

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sigint. It accelerated the development of a revolutionary new kind of sigint that focused on equipment and military formations.9 During the Second World War, Bletchley Park’s primary emphasis had been the interception of communications signals for intelligence purposes. However, as the war progressed, there was growing interest in another kind

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appropriate that an RAF officer should have succeeded Edward Travis, who had been increasingly ill during the late 1940s with lumbago.43 Jones was a Bletchley Park veteran who had proved himself while in charge of the critically important Hut Three. Bill Millward, another long-serving GCHQ veteran, recalls that at

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was especially damaging, and had prompted the government to produce its own official history of intelligence, and even to release some wartime sigint records from Bletchley Park for use by historians.53 Managing the public image of the intelligence community was entirely new territory for the authorities, who now faced the nightmare

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KGB had already managed to find out about current GCHQ activities had formed part of the deliberations over the release of wartime sigint records from Bletchley Park. ‘The Russians in particular know of our sigint successes,’ noted one official, adding that the worst leaks had occurred because of ‘three defectors from

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on their watch. The balance between liberty and security was already a hot issue, and during 2005 it would become even hotter.78 26 From Bletchley Park to a Brave New World? These new proposals suggest an intention to capture anything and everything… UK internet service providers commenting on government plans, August

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the 1960s Cheltenham had helped to steer national policy on language-teaching. Indeed, Arthur Cooper, GCHQ’s senior sinologist (and brother to the well-known Bletchley Park veteran Josh Cooper), had been loaned to the Department of Education and Science as Research Adviser on the Development of Modern Languages. He had also

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M.Lib. dissertation, University of Wales, 1990 Cooley, J.K., Unholy Wars (Chicago: Uni. of Michigan Press, 2000) Copeland, B.J., Colossus: The Secrets of Bletchley Park’s Code-Breaking Computers (Oxford: Oxford UP, 2006) Cristol, A.J., The Liberty Incident: The 1967 Israeli Attack on the US Navy Spy Ship (Washington

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Intelligence in the Second World War, Vols 1–4 (HMSO, 1979–83) Hinsley, F.H. and Stripp, A. (eds), Code-Breakers: The Inside Story of Bletchley Park (Oxford: Oxford UP, 1993) Hitchcock, W.T. (ed.), The Intelligence Revolution in Historical Perspective (Washington DC: US Air Force Academy, 1991) Holland, R., Emergencies

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, Old Dagger: How Britain’s Spies Came in from the Cold (Victor Gollancz, 1996) —Station X: The Code-Breakers of Bletchley Park (Channel 4 Books, 1998) —The Emperor’s Codes: Bletchley Park and the Breaking of Japan’s Secret Ciphers (Bantam, 2000) —The Spying Game: A Secret History of British Espionage (Politico’s

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16–18 Baylis, J., ‘British Nuclear Doctrine: The “Moscow Criterion” and the Polaris Improvement Programme’, Contemporary British History, 19/1 (2005): 53–65 Bonsall, A., ‘Bletchley Park and the RAF Y Service: Some Recollections’, IØNS, 23/6 (2008): 827–41 Brown, K., ‘Intelligence and the Decision to Collect it: Churchill’s Wartime

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R. and Freeman, P., ‘Brigadier John Tiltman: One of Britain’s Finest Cryptologists’, Cryptologia, 27/4 (2003): 289–318 Ferris, J., ‘From Broadway House to Bletchley Park: The Diary of Captain Malcolm Kennedy, 1934–46’, IØNS, 4/3 (1989): 421–51 —‘Coming in from the Cold: The Historiography of American Intelligence, 1945

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C. and Sturdy, A., ‘The 1942 Reorganization of the Government Code and Cypher School’, Cryptologia, 32/4 (2008): 311–33. —‘A Chaos that Worked: Organizing Bletchley Park’, Public Policy and Administration, 25/1 (2010): 47–68 Hamilton, K., ‘Britain, France and America’s Year of Europe, 1973’, Diplomacy and Statecraft, 17/4

Enigma

by Robert Harris  · 15 Feb 2011  · 387pp  · 111,096 words

an actual historical event. The German naval signals quoted in the text are all authentic. The characters, however, are entirely fictional. 'It looks as if Bletchley Park is the single greatest achievement of Britain during 1939-45, perhaps during this century as a whole.' —George Steiner 'A mathematical proof should resemble a

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WHISPERS WHISPERS : the sounds made by an enemy wireless transmitter immediately before it begins to broadcast a coded message. A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 CAMBRIDGE IN THE fourth winter of the war: a ghost town. A ceaseless Siberian wind with nothing to blunt its edge for a

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in cipher or in some other secret form which requires a key gy for its meaning to be discovered. A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 THE NIGHT WAS impenetrable, the cold irresistible. Huddled in his overcoat inside the icy Rover, Tom Jericho could barely see the flickering of

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September, the day Britain declared war, a telegram arrived at the Porter's Lodge ordering him to report the following morning to a place called Bletchley Park. He left King's as instructed, as soon as it was light, wedged into the passenger seat of Atwood's antiquated sports car. Bletchley turned

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material; (2) n., any object stolen from the enemy that enhances the chances of breaking his codes or ciphers. A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 BLETCHLEY WAS A railway town. The great main line from London to Scotland split it down the middle, and then the smaller branch

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as the station and the engine sheds, constructed in the same dour, industrial style. The Commercial Guesthouse, Albion Street, was about five minutes' walk from Bletchley Park and backed on to the main line. Its owner, Mrs Ethel Armstrong, was, like her establishment, a little over fifty years old, solidly built, with

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and Logie, Puck and Atwood had been ordered to present themselves at the office block in Broadway, near St James's tube station, from which Bletchley Park was run. 'C' himself had made a little speech about the value of their work. In recognition of their Vital breakthrough', and on the orders

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alongside her. They lapse into silence. There's a noticeboard close to the main gate advertising a performance of Bach's Musikalisches Opfer by the Bletchley Park Music Society. 'Oh, now look at that, 'she says, 'I adore Bach', to which Jericho replies with genuine enthusiasm, that Bach is his favourite composer

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bike and pointed it down the hill, towards the south, towards Orion and Procyon, and to Hydra, which hung suspended in the night sky above Bletchley Park like a knife. Enigma FOUR KISS KISS: the coincidence of two different cryptograms, each transmitted in a different cipher, yet each containing the same original

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plaintext, the solution of one thereby leading to the solution of the other. A Lexicon of Cryptography ("Most Secret', Bletchley Park, 1943) 1 HE DOESN'T KNOW what wakes him—some faint sound, some movement in the air that hooks him in the depths of his

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Though the picture fades too soon But I see all I want to know They can't black out the moon ....' From Albion Street to Bletchley Park was a walk of less than half a mile—left out of the door and along the street of terraced houses, left under the blackened

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't want to know.' Before Jericho could answer he had crossed the path and disappeared around the back of Hut 3. Within the grounds of Bletchley Park, just beyond the mansion, in the shadow of a fir tree, stood an ordinary red telephone box. Inside it, a young man in motorcycle leathers

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a call, please, to Kensington double-two five seven.' She repeated the number. 'That'll be fourpence, caller.' A sixty-mile land line connected all Bletchley Park numbers to the Whitehall exchange. As far as the operator could tell, Jericho was merely calling one London borough from another. He pressed four pennies

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centuries of hard white stone and Christian piety, lay at the end of an avenue of elderly yew trees, less than a hundred yards beyond Bletchley Park. As Jericho walked through the gate he saw bicycles, fifteen or twenty of them, stacked neatly around the porch, and a moment later heard the

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, aristocratic manner and a kind of decadent Anglo-Saxon handsomeness. His companion was older, smaller, slim and dark, with a northern accent. They both had Bletchley Park passes and said they'd come from Welfare and were looking for Miss Romilly. She hadn't turned up for work: any idea where she

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duck at a funfair.' 'Now that's what I would have thought, though one shouldn't always judge a chap by his looks. Only the Bletchley Park Home Guard had a little burglary at their armoury on Friday night. Two items missing. A Smith and Wesson .38 revolver, manufactured in Springfield, Massachusetts

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. July 'forty-one: translator at the Ministry of Economic Warfare. August 'forty-two: applies for clerical position, Foreign Office. Good languages. Recommended for position at Bletchley Park. See attached letter from father, blah, blah. Interviewed 10th of September. Accepted, cleared, starts work the following week.' Wigram flicked the pages back and forth

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question, the crib . . . is the single most essential tool of any cryptanalyst' (Knox et al., op. cit., page 27). A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 THE WARTIME LIPSTICK was hard and waxy—it was like trying to colour your lips with a Christmas candle. When, after several minutes

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her bag and followed him down the aisle. Outside they pretended to study the tombs. To the north of the churchyard, screened by trees, was Bletchley Park. A motorcycle passed noisily down the lane towards the town. Jericho waited until the crack of its engine had dwindled to a drone in the

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gap in the hedge, then vanished like the fox. 5 The lane led him up over the Chase, past the big wireless masts of the Bletchley Park out-station at Whaddon Hall, and down to the Buckingham Road. He peered along it, cautiously. According to the map, only five roads, including this

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town. He drove on past the suburban villas with their white pebble-dashed frontages and their fake Tudor beams, then left up the hill towards Bletchley Park. He turned into Wilton Avenue and immediately braked. Parked at the end of the street beside the guard post was a police car. An officer

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the North Atlantic and the tension which had been building all evening began to slacken. The 2 a.m. offering from the cooks of the Bletchley Park canteen was enough to make even Mrs Armstrong blanch—boiled potatoes in cheese sauce with barracuda, followed by a pudding made from two slices of

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., a message which has been enciphered once, and then re-enciphered to provide double security. A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 LATER, IT WOULD transpire that Bletchley Park knew almost everything there was to know about U-653. They knew she was a Type VIIc—220 feet long, 20 feet

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Room, cursing her fears, pretending to study the noticeboard. With a shaking hand she made a note about a performance of Die Fledermaus by the Bletchley Park Music Society which she had no intention of ever attending. The second run was better. There was no machinery in the Machine Room—the origin

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the dawn on his shoulders, brightening by the minute. He looked back only when he reached the road, and that was his last impression of Bletchley Park: a thin line of low, black buildings—mere dots and dashes along the horizon—and above them in the eastern sky an immense arc of

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. Enigma SEVEN PLAINTEXT PLAINTEXT: The original, intelligible text, as it was before encipherment, revealed after successful decoding or cryptanalysis. A Lexicon of Cryptography ('Most Secret', Bletchley Park, 1943) 1 THE APPLE TREES wept blossom in the wind. It drifted across the graveyard and piled like snow against the slate and marble tombs

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men in black ties, and many others whose names Hester never knew but whose lives had clearly been touched by the six-month presence at Bletchley Park of Claire Alexandra Romilly, born 21.12.22 and died (according to the police's best estimate) 14.3.43: Rest in Peace. Hester sat

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one of Jericho's discarded mystery stories, flicked through it, smiled, replaced it. 'You know, Tom,' he said thoughtfully, 'there's never been anything like Bletchley Park in the history of the world. There's never been a time when one side knew so much about its enemy. In fact, sometimes, I

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flap. 1 need to speak to you. Please.' The tall man didn't move. 'Who are you?' 'Tom Jericho. We spoke once on the telephone. Bletchley Park.' Romilly's shoulders sagged. 'For God's sake, will you people just leave me alone!' I've been to Somerset House, Mr Romilly,' said Jericho

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give it, as if he recognised in Jericho a fellow sufferer. It had been Wigram's bright idea, he said, to put an agent into Bletchley Park. A woman. Someone who could keep an eye on this peculiar collection of characters, so essential to the defeat of Germany, yet so alien to

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exactly the right age. All that was required of him, apart from the use of his daughter's name, was a letter of introduction to Bletchley Park. In fact, not even that, since Wigram would write her letter: a signature would suffice. And then Romilly could continue with his solitary existence, content

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hall, before moving off purposefully towards his staircase, passing out of sight. Acknowledgements I OWE A debt of gratitude to all those former employees of Bletchley Park who spoke to me about their wartime experiences. In particular, I would like to thank Sir Harry Hinsley (Naval Section, Hut 4), Margaret Macintyre and

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Milner-Barry (former head of Hut 6), Joan Murray (Hut 8) and Alan Stripp (Japanese ciphers). Roger Bristow, Tony Sale and their colleagues at the Bletchley Park Trust answered my questions with great patience and allowed me to wander about the site at will. None of these kind people bears any responsibility

One Day in August: Ian Fleming, Enigma, and the Deadly Raid on Dieppe

by David O’keefe  · 5 Nov 2020  · 1,243pp  · 167,097 words

archives with such persistence that the keepers of the British code-breaking secrets conceded that there was no point holding back the remaining records linking Bletchley Park, Ian Fleming and the Dieppe raid.’ —Peter Henshaw, Dieppe scholar and intelligence analyst, Privy Council Office ‘In the same way that intelligence in the

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-boat wolf packs. This privilege was not made available to the official historians in Canada, although Canadians took part in Ultra-inspired missions, worked at Bletchley Park, and were indoctrinated in and used the material in the field. When the brilliant patriarch of Canadian military history, Colonel Charles P. Stacey, set

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field of battle, but also extended to the technology, processes, policies, operations and even history centred around the secret British code-breaking facility known as Bletchley Park. Purchased by the Secret Intelligence Service (SIS, or MI6 as it became popularly known) at the outset of the war, this sprawling Victorian estate in

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the times. Mid-1942 was the desperate ‘blackout’ period for the British Naval Intelligence Division (NID). Thanks to the cryptanalysts working around the clock in Bletchley Park, for nearly a year – from the spring of 1941 to February 1942 – the British had enjoyed astonishing success in intercepting and decrypting German navy messages

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each had their own version) first developed by the Germans at the end of the First World War. To do their work, the cryptanalysts at Bletchley Park relied on pinched material – Enigma machines captured from destroyed submarines, for instance, or, more importantly, the codebooks, rotor-setting sheets and instruction manuals used

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everyone thought, but to Charles Babbage, widely referred to as the ‘father of the computer.’18 In 1822, nearly a century and a quarter before Bletchley Park unleashed the world’s first computer, Babbage, assisted by parliamentary funding, embarked on the development of his ‘Second Difference Engine.’19 Unfortunately, official patience soon

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rather than public-school games. His wife, Margaret, a capable Cambridge-trained woman, went on to do valuable war work in intelligence herself, serving at Bletchley Park and later at her husband’s pet project, the Inter-Services Topographical Department (ISTD) located at Oxford University. Godfrey would stamp his individual leadership style

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an invasion of England in the summer of 1940 was not in the stars. In another scheme designed to hide the code-breakers’ work at Bletchley Park and the signals intelligence funnelling into the Operational Intelligence Centre, Fleming introduced the cover story that British intelligence employed ‘Pendulum Practitioners’ to find U-boat

…

Nazi tyranny. In this context, there can be little doubt that the ‘intelligence booty’ Fleming sought in Ruthless was akin to the Holy Grail for Bletchley Park. Fleming had dreamed up the operation to assist the gifted cryptanalysts who worked in Bletchley’s Naval Section – brilliant mathematicians, physicists and classical scholars such

…

, this wide distribution formed the fertile playing ground for John Godfrey and Ian Fleming to pinch the materials so badly needed by the cryptanalysts at Bletchley Park. The Enigma machine came to obsess anyone involved with decryption, no matter how marginal the association. It was an intellectual Everest; enticing, taunting, and

…

psychological breakdown, and universal frustration; yet, because of the secrecy surrounding it, for decades only muted glory came to those who eventually conquered it at Bletchley Park. Initially designed in the closing months of the First World War by Arthur Scherbius, a German engineer, for commercial use to protect banking and industrial

…

Intelligence that, without outside assistance from one or other of these 2 sources, we are far from hopeful of success.21 Fortunately, help for the Bletchley Park cryptanalysts came in several forms. First, they received tremendous aid from the work of exiled Polish cryptanalysts, who had pioneered the cryptographic assault on an

…

one short, sharp action, the destroyers disabled the trawler and captured her crew before they could destroy their cryptographic documents. The haul, delivered promptly to Bletchley Park, was a godsend for Turing: it revealed the precise form of the indicating system, the plugboard connections, and the starting positions of the three rotors

…

subsequent ruse remained undiscovered. So impressed with the fruits of Ultra was Cunningham that, on his return to England, he made a priority visit to Bletchley Park to thank the cryptanalysts in person for providing the critical intelligence required for the victory in the Mediterranean – once again Churchill’s ‘golden eggs’

…

sensitive nature of all these pinch operations, responsibility remained firmly in the hands of Godfrey and his well-organized Naval Intelligence Division in London. But Bletchley Park’s highly secret Naval Section, housed in both Huts 4 and 8, was designated to receive the captured enemy naval documents immediately after they arrived

…

without the knowledge of the Naval Section.29 To maintain that authority and channel Birch’s increasing demands, Godfrey created an official liaison position with Bletchley Park to reinforce the direct link already handled by Fleming, who visited there regularly. Early in 1941, Godfrey posted several representatives from his NID to

…

February and April. In addition, the information Turing gleaned from the material enabled him to reconstruct the current bigram tables – a breakthrough that eventually helped Bletchley Park unlock the naval Enigma code.33 As Birch crowed: ‘Nothing succeeds like success. For one thing, Hut 8, fortified with these data, managed to

…

special operations warfare – a template for properly organized pinch raids that whetted the appetites of both the Naval Intelligence Division and the Naval Section at Bletchley Park for a repeat performance. A series of operations materialized starting in May, just a few weeks before the Bismarck made her fateful breakout into

…

, the Enigma machine. The odds were therefore extremely high that these lightly armed and thoroughly vulnerable ships could deliver the materials that the experts at Bletchley Park required; moreover, isolated as they were, they would prove easier to capture. Second, the weather-reporting ships operated alone and in remote areas of

…

pinch forces to retrieve what was required and escort it back to London – a risky proposition should he be captured, given his intimate knowledge of Bletchley Park and the cryptographic effort.41 Before Operation EB began, Haines briefed the force commanders (cruiser squadron commander Vice Admiral Lancelot Holland and his destroyer captains

…

Despite his daring and aggressive spirit that bordered at times on the reckless, he recognized the need to foster the intellectual and technological work at Bletchley Park – a process and a product that was increasingly viewed as a new-found natural resource. The injection of a charismatic and influential character like Mountbatten

…

targeting a wireless station and the local Kriegsmarine headquarters, each housed in a hotel, in an attempt to scrounge the critical codebooks and other materials Bletchley Park urgently needed.30 The operational instructions prepared for Operation Archery included this carefully crafted advisory: It is very important that ships, particularly escort ships, armed

…

associated codebooks, tables and setting sheets, not to mention copies of RHV, short-signal codebooks, weather codes and dockyard ciphers – all of critical importance to Bletchley Park.68 As an added bonus, other materials – such as plans, charts, technical documents, lists of commanders and the order of battle, and the key

…

.P. Mahon, wrote, any message enciphered by the Germans on the new four-rotor device withstood the intellectual and electromechanical probes from the cryptanalysts at Bletchley Park.13 Nothing, at least in the immediate future it seemed, could fix the problem. Lamenting the situation, Mahon recorded: ‘Clearly, we had lost the

…

than science – and to round out and properly interpret the findings, the cryptanalysts required a consistent corpus of evidence to draw on as needed.22 Bletchley Park also dabbled with the techniques of radio fingerprinting (RFP, where they identified specific transmitters by photographing the particular waveform) and TINA (where they analysed the

…

not only a remarkable British breakthrough but, arguably, one of the last indigenous natural resources that Great Britain possessed. The technology and processes developed in Bletchley Park’s code-breaking huts to exploit both the Enigma machine and, a year later, to build Colossus, the world’s first programmable computer, to

…

the American cryptographic mission, backed by millions of dollars (trillions by today’s standards), meant that the clock was indeed ticking on British efforts at Bletchley Park. In response, the Government Code and Cypher School sent a team of cryptographic liaison officers across the Atlantic to exercise damage control. It was led

…

German U-Boats situation.’83 Despite the rough beginning, the British mission produced encouraging results. First, Tiltman smoothed ruffled feathers by candidly revealing the problems Bletchley Park faced with the Germans’ recent introduction of a four-rotor machine – a move that apparently thawed the tense atmosphere after the Americans, who had received

…

every front at the dawning of 1942, Mountbatten’s Combined Operations stood out as the lone delivery vehicle capable of offensive action and thus feeding Bletchley Park’s voracious appetite for German code and cipher materials. Having built his reputation in part on his work in signals intelligence, Mountbatten understood what

…

daughter, Katherine. In the best nepotistic traditions of the intelligence world, Godfrey had placed first his wife and then his daughter in support positions at Bletchley Park, as had his RAF counterpart on the Joint Intelligence Committee, Air Marshal Charles Medhurst, whose daughter Rozanne worked alongside Kate and the ‘boffins’ in

…

Division would be able to select and rigorously train its own ‘private army’ with intimate knowledge of its unique requirements – and, by extension, of Bletchley Park’s too. Armed with the appropriate firepower, the commandos would be able to overtake the local defences, prevent the last-minute destruction of the Enigma

…

the planning of Operation Rutter. The year before, the successful raids at the Lofoten and Vaagso islands had generated significant results for the cryptanalysts at Bletchley Park and clearly positioned Combined Operations as the principal vehicle for signals intelligence pinch raids. Although criticism had flared up over the planning of the aborted

…

both Mountbatten’s headquarters and John Godfrey’s Naval Intelligence Division probably remained uneasy until Huntington-Whiteley’s fate was established. With no knowledge of Bletchley Park or cryptographic methods or procedures, Huntington-Whiteley would not have seemed a prize intelligence catch. Unless German intelligence had some reason to suspect that there

…

in the Naval Intelligence machinery that some sources have gone out of their way to portray. Having carried the NID liaison portfolios for MI5, MI6, Bletchley Park, the Ministry of Economic Warfare, the Political Warfare Executive, the SOE, the Joint Intelligence Committee, the Inter-Services Topographical Department, as well as the

…

high-speed electromechanical device designed specifically to decipher Enigma-encrypted messages, originally designed by Polish cryptanalysts in the 1930s and perfected by the British at Bletchley Park ‘C’: the name by which the Chief of the Secret Intelligence Service was known, his or her actual identity being Top Secret until only

…

Tragedy to Triumph. Toronto: McGraw-Hill Ryerson, 1992. Zuehlke, Mark. Tragedy at Dieppe: Operation Jubilee, August 19, 1942. Vancouver: Douglas and McIntyre, 2012. CRYPTOGRAPHY AND BLETCHLEY PARK Aldrich, J. Richard. GCHQ. London: HarperCollins, 2010. Babbage, Charles. On the Economy of Machinery and Manufactures. 1832. Babbage, Charles. Reflections on the Decline of Science

…

Press, 2009. Kindle edition. Carter, Frank. Breaking Naval Enigma: An Account of the Additional Problems Encountered and the Methods Used to Solve Them. Bletchley, UK: Bletchley Park Trust, 2008. Collier, Bruce, and James MacLachlan. Charles Babbage: And the Engines of Perfection. Oxford: Oxford University Press, 1998. Copeland, Jack B. Colossus: The

…

Secrets of Bletchley Park’s Code-breaking Computers. Oxford: Oxford University Press, 2006. ——. Turing: Pioneer of the Information Age. Oxford: Oxford University Press, 2012. Denniston, Robin. Thirty Secret Years

…

A.G. Denniston’s Work in Signals Intelligence 1914–1944. Clifton-Upon-Teme, UK: Polperro Heritage Press, 2007. Erskine, Ralph, and Michael Smith, eds. The Bletchley Park Codebreakers: How Ultra Shortened the War and Led to the Birth of the Computer. London: Biteback Publishing, 2011. Haufler, Hervie. Codebreakers’ Victory: How the Allied

…

Cryptographers Won World War II. New York: Penguin, 2003. Hinsley, F.H., and Alan Stripp. Codebreakers: The Inside Story of Bletchley Park. New York: Oxford University Press, 1993. Hodges, Andrew. The Alan Turning Enigma. London: Random House, 1983. Kahn, David. The Codebreakers: The Comprehensive History of

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& Schuster, 2011. Weiner, Tim. Enemies: A History of the FBI. New York: Random House, 2012. IAN FLEMING Batey, Mavis. From Bletchley with Love. Bletchley, UK: Bletchley Park Trust, 2008. Gardiner, Philip. The Bond Code: The Dark World of Ian Fleming and James Bond. Pompton Plains, NJ: Career Press, 2008. Lycett, Andrew. Ian

…

2002. ——. War of the U-Boats: British Merchantmen Under Fire. Barnsley, UK: Pen and Sword, 2006. Gallehawk, John. Convoys and the U-Boats. Bletchley, UK: Bletchley Park Trust, 1997. Gannon, Michael. Operation Drumbeat: Germany’s U-Boat Attacks Along the American Coast in World War II. New York: HarperCollins, 1990. Gardner, W

…

Use of SIGINT in certain Naval Operations.’ 6. Ibid. According to Mavis Batey, Knox and his counterpart William ‘Nobby’ Clarke (who handled operational intelligence at Bletchley Park) circumvented normal channels to deal directly with Cunningham ‘through Godfrey, to speed up the process without revealing the secret source … It is not clear how

…

Nazaire as destination, 1 support vessels, 1, 2, 3 threat from, 1, 2 Bismarck (gun battery, Pollet), 1 Bleichrodt, Captain-Lt. Heinrich, 1, 2 Bletchley Park alternative intelligence sources, 1 Anglo-American cooperation, 1, 2, 3, 4 Bismarck, hunt for, 1 Channel naval traffic, monitoring of, 1 creation of, 1 four

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To Be a Machine: Adventures Among Cyborgs, Utopians, Hackers, and the Futurists Solving the Modest Problem of Death

by Mark O'Connell  · 28 Feb 2017  · 252pp  · 79,452 words

Globish: How the English Language Became the World's Language

by Robert McCrum  · 24 May 2010  · 325pp  · 99,983 words

Secrets and Lies: Digital Security in a Networked World

by Bruce Schneier  · 1 Jan 2000  · 470pp  · 144,455 words

Rise of the Machines: A Cybernetic History

by Thomas Rid  · 27 Jun 2016  · 509pp  · 132,327 words

Distrust That Particular Flavor

by William Gibson  · 3 Jan 2012  · 153pp  · 45,871 words

Overlord: D-Day and the Battle for Normandy 1944

by Max Hastings  · 22 Mar 2012  · 739pp  · 165,366 words

More: The 10,000-Year Rise of the World Economy

by Philip Coggan  · 6 Feb 2020  · 524pp  · 155,947 words

AIQ: How People and Machines Are Smarter Together

by Nick Polson and James Scott  · 14 May 2018  · 301pp  · 85,126 words

The Mysterious Mr. Nakamoto: A Fifteen-Year Quest to Unmask the Secret Genius Behind Crypto

by Benjamin Wallace  · 18 Mar 2025  · 431pp  · 116,274 words

Some Remarks

by Neal Stephenson  · 6 Aug 2012  · 335pp  · 107,779 words

Future Politics: Living Together in a World Transformed by Tech

by Jamie Susskind  · 3 Sep 2018  · 533pp

The AI Economy: Work, Wealth and Welfare in the Robot Age

by Roger Bootle  · 4 Sep 2019  · 374pp  · 111,284 words

Life After Google: The Fall of Big Data and the Rise of the Blockchain Economy

by George Gilder  · 16 Jul 2018  · 332pp  · 93,672 words

This Machine Kills Secrets: Julian Assange, the Cypherpunks, and Their Fight to Empower Whistleblowers

by Andy Greenberg  · 12 Sep 2012  · 461pp  · 125,845 words

Fuller Memorandum

by Stross, Charles  · 14 Jan 2010  · 366pp  · 107,145 words

The Devil's Chessboard: Allen Dulles, the CIA, and the Rise of America's Secret Government

by David Talbot  · 5 Sep 2016  · 891pp  · 253,901 words

Live and Let Spy: BRIXMIS - the Last Cold War Mission

by Steve Gibson  · 2 Mar 2012  · 377pp  · 121,996 words

Tripping on Utopia: Margaret Mead, the Cold War, and the Troubled Birth of Psychedelic Science

by Benjamin Breen  · 16 Jan 2024  · 384pp  · 118,573 words

The World According to Bertie

by Alexander McCall Smith; Robert Ian MacKenzie  · 1 Jan 2007  · 415pp  · 113,875 words

Kill Chain: The Rise of the High-Tech Assassins

by Andrew Cockburn  · 10 Mar 2015  · 389pp  · 108,344 words

Checkpoint Charlie

by Iain MacGregor  · 5 Nov 2019  · 401pp  · 119,043 words

A History of Modern Britain

by Andrew Marr  · 2 Jul 2009  · 872pp  · 259,208 words

NeuroTribes: The Legacy of Autism and the Future of Neurodiversity

by Steve Silberman  · 24 Aug 2015  · 786pp  · 195,810 words

George Marshall: Defender of the Republic

by David L. Roll  · 8 Jul 2019

Berlin: Life and Death in the City at the Center of the World

by Sinclair McKay  · 22 Aug 2022  · 559pp  · 164,795 words

Wired for War: The Robotics Revolution and Conflict in the 21st Century

by P. W. Singer  · 1 Jan 2010  · 797pp  · 227,399 words

Augmented: Life in the Smart Lane

by Brett King  · 5 May 2016  · 385pp  · 111,113 words

The Rough Guide to Egypt (Rough Guide to...)

by Dan Richardson and Daniel Jacobs  · 1 Feb 2013

Fortune's Formula: The Untold Story of the Scientific Betting System That Beat the Casinos and Wall Street

by William Poundstone  · 18 Sep 2006  · 389pp  · 109,207 words

The Year's Best Science Fiction: Twenty-Sixth Annual Collection

by Gardner Dozois  · 23 Jun 2009  · 1,263pp  · 371,402 words