The Bletchley Park Codebreakers
Page 62
Army Signal Security Agency 1, 2
atomic bomb 1, 2
bombes 1, 2, 3, 4, 5, 6, 7
British co-operation with 1, 2, 3, 4, 5, 6, 7, 8
British distrust of US security 1
Central Intelligence Agency 1
Cipher Bureau 1
cryptanalysis 1
enters war 1
Federal Bureau of Investigation 1
First United States Army Group 1
National Reconnaissance Office 1
National Security Agency 1, 2, 3, 4, 5, 6, 7
CANX 1
Naval Security Group 1
Navy Computing Laboratory 1
Navy Department 1
neutrality 1
Office of Naval Intelligence 1
Office of Strategic Services 1, 2
OP-20-G 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
OP-31 1
Pacific Fleet 1
Signal Intelligence Service (SIS) 1, 2, 3
see also Arlington Hall
service rivalries 1, 2
6813th Signals Security Detachment 1, 2
‘special relationship’ 1, 2, 3
State Department 1
suspicious of Britain 1
War Department 1, 2, 3
war of 1812 1
University Recruiting Board 1
Uranus see Trumpeter
Venona project 1, 2, 3
Ventris, Michael 1
Vienna 1
Vincent, E. R. (‘Vinca’) 1, 2
Vis 1
Vittorio Veneto 1, 2
Vivian, Major Valentine 1, 2
VJ Day 1
Vlasto, Alexis
Linguistic History of Russia 1
Sarafand 1
von Neumann, John 1, 2
‘Rigorous Theories’ 1
Vulture 1
V-weapons 1
Waddington 1
Wales 1
walk-ins 1
Wallace, Henry 1
Walter see Tito
Walzenlage see Enigma
War Office 1, 2, 3, 4, 5 GC&CS 1
Haldane Committee 1
Y Group 1
Warder, Admiral 1
Warsaw 1, 2, 3, 4
Warspite 1, 2
Washington, DC 1
Washington Agreement (1944) 1
Watch, the 1, 2
Watton 1
Watts 1, 2
Wavell, Archibald 1
Wavendon 1, 2
Wayne State University 1
weather reports 1, 2, 3, 4, 5, 6, 7, 8, 9
Webb, Major Norman 1
Weeks, Ensign Robert 1, 2
Weisband, William 1, 2
Weiss, Operation 1, 2
Welchman, Gordon 1, 2, 3, 4, 5, 6, 7, 8 background 1
Cold War 1
diagonal board 1, 2
Enigma 1
Hut Six Story 1, 2, 3, 4
mathematicians 1
Phoenix 1
recruited 1, 2, 3, 4
traffic analysis 1
Wenger, Commander Joseph 1, 2, 3
Wenneker, Vice-Admiral Paul 1
Werftschlüssel 1
Western Desert 1
Western Wireless Signal Centre, Bangalore 1
Wetterkurzschlüssel 1, 2
Wheeton, Stephen James 1
Whelan, Ronald 1
Whitchurch 1
Whitworth, Jimmy 1, 2, 3
White, Sir Dick 1, 2, 3
White, Harry Dexter 1
Whitemore, Hugh: Breaking the Code 1
Wicher 1
Wick 1
Wiener, Norbert 1
Wilkinson, Patrick 1
Williams, Brig. E. T 1
Williams, Frederick: Williams tube 1
Williamson, Malcolm 1
Wilson, Captain 1
Wilson, Field Marshal Sir Henry 1
Winchester 1
Winterbotham, Frederick: Ultra Secret 1, 2
Wireless Experimental Centre, Delhi 1, 2
Wireless Experimental Depot, Abbottabad 1
wireless telegraphy intelligence see traffic analysis
Woburn Abbey 1
Women’s Auxiliary Air Force 1, 2, 3
Women’s Royal Naval Service/Wrens 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
Womersley, John 1
Wormwood Scrubs 1
wrapover texts 1
WWs see weather reports
Wylie, Shaun 1, 2, 3, 4, 5, 6, 7
Wynn-Williams, Dr C. E. 1, 2, 3
X (Italian code) 1, 2
X-Gerat 1
Y Committee 1, 2, 3, 4, 5, 6, 7, 8, 9
Yamamoto Isoruku, Admiral 1
Yardley, Colonel Herbert O. 1
Yellow 1, 2
Yoxall, Leslie 1
Yugoslavia 1, 2, 3
Britain and 1
Zagreb 1, 2, 3
Zimmermann Telegram 1, 2, 3
Zionism 1
Zygalski, Henrvk 1
Zygalski sheets 1, 2
Alan Turing, the mathematical genius who designed the British bombe, and was a co-signatory of the Trafalgar day letter to Churchill.
National Portrait Gallery
Gordon Welchman, the first head of Hut 6, and co-signatory of the letter.
Gordon Welchman
Hugh Alexander, a leading Bletchley Park codebreaker (later the head of Hut 8) and co-signatory of the letter.
Sir Michael Alexander
Stuart Milner-Barry, a Bletchley Park codebreaker (who succeeded Gordon Welchman as the head of Hut 6), and co-signatory of the letter.
Lady Milner-Barry
The GC&CS diplomatic and commercial codebreaking operations at 7–9 Berkeley Street, London.
National Archives, College Park, Md
John Tiltman (right) with Alastair Denniston, the original head of the Government Code and Cypher School (left) and Professor E. R. P. Vincent.
National Archives, College Park, Md
Members of ‘Captain Ridley’s Shooting Party’ arriving at Bletchley Park.
Barbara Eachus
Mavis and Keith Batey, who worked on the Abwehr ‘counter’ Enigma machine (below left).
Mavis and Keith Batey
Dilly Knox, the veteran codebreaker who broke a number of important codes and cipher machines, including the Abwehr ‘counter’ Enigma (below).
Mavis Batey
Abwehr Enigma machine (with ‘counter’ and Umkehrwalze that moved when enciphering).
David Hamer
The Schlüsselgerät 41, invented by Fritz Menzer, which replaced some Abwehr Enigmas in late 1944.
NSA Center for Cryptologist History
Hugh Foss, who was the first person at GC&CS to solve Enigma, in the form of the C model, and also broke the pre-war Japanese naval attaché cipher machine.
Charles G. Foss
John Chadwick, who solved Italian naval codes in Cairo, and later became a Japanese translator at Bletchley Park.
Tony Chadwick
Rolf Noskwith, who worked on naval Enigma in Hut 8.
Rolf Noskwith
Enigma C, known at GC&CS as the ‘index machine’.
Public Record Office HW 25/6
Shaun Wylie (who worked on ‘Tunny’) marrying Odette Murray (then a Wren at Bletchley Park also working on ‘Tunny’), in April 1944.
Shaun Wylie
Lorenz Schlüsselzusatz SZ42 ‘Tunny’ teleprinter cipher attachment, with cover removed.
Wolfgang Mache
Right: Colossus, the world’s finest first electronic semi-programmable computer, operational at Bletchley Park from December 1943. It was used to break ‘Tunny’.
Bletchley Park Trust
Derek Taunt, who was later a codebreaker in Hut 6, at Jesus College, Cambridge, in June 1939.
Derek Taunt
James Thirsk, log reader in ‘Sixta’, the traffic analysis section of Hut 6.
James Thirsk
Duenna, the US Navy
machine which was used to break Umkehrwalze D.
National Archives, College Park, Md
Wiring core of the rewireable Umkehrwalze D, with pin removed. If ‘D’ had been used properly by the Luftwaffe in 1944, it would have dried up Hut 6 Ultra.
Philip Marks
US Navy four-rotor bombe, with WAVE. Note the eight vertical banks of Enigma rotors. National Archives, College Park, Md
HMS Anderson, the British intercept and codebreaking site outside Colombo, which intercepted Japanese communications during the Second World War and remained in place into the Cold War, working on Soviet traffic.
Public Record Office HW4/3
British three-rotor bombe in the GC&CS outstation at Eastcote, north London.
National Archives, College Park, Md
A Hut 3 report of an Enigma decrypt as sent to Churchill, of the German message reporting that the Allies had landed on D-Day.
Public Record Office HW/2895
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