Introduction - the influence of Ultra in World War II, F.H. Hinsley. Part 1 The production of Ultra intelligence: life in and out of Hut 3, William Millward; the duty officer Hut 3, Ralph Bennett; a naval officer in Hut 3, Edward Thomas; the Z watch in Hut 4 part I, Alec Dakin; the Z watch in Hut 4 part II, Walter Eytan; Italian naval decrypts, Patrick Wilkinson; Naval Section VI, Vivienne Alford; Anglo-American signals intelligence co-operation, Telford Taylor; an American at Bletchley, Robert M. Slusser; Bletchley Park, the Admiralty and naval Enigma, F.H. Hinsley. Part 2 Enigma: the Enigma machine - its mechanism and use, Alan Stripp; Hut 6 - early days, Stuart Milner-Barry; Hut 6 - 1941-1945, Derek Taunt; Hut 8 and naval Enigma part I, Joan Murray; Hut 8 and naval Enigma part II, Rolf Noskwith; the Abwehr Enigma, Peter Twinn; the bombes, Diana Payne; Part 3 Fish: an introduction to Fish, F.H. Hinsley; Enigma and Fish, Jack Good; the Tunny machine, Ken Halton; Operation Tunny, Gil Hayward. Part 4 Field ciphers and tactical codes: recollections of Bletchley Park, France and Cairo, Henry Dryden; army Ultra's poor relations, Noel Currer-Briggs; navy Ultra's poor relations, Christopher Morris; tactical signals of the German air force, Peter Gray Lucas. Part 5 Japanese codes: Japanese naval codes, Michael Loewe; Bedford - Bletchley - Kilindini - Colombo, Hugh Denham; Japanese military codes, Maurice Wiles; Japanese army air force codes at Bletchley Park and Delhi, Alan Stripp; recollections of "temps perdu" at Bletchley Park, Carmen Blacker. Appendix: how the Bletchley Park buildings took shape, Bob Watson.
About the Editors:
F.H. Hinsley was formerly Master of St John's College and Professor of the History of International Relations at the University of Cambridge. He is the author of the four-volume history British Intelligence in the Second World War.
Alan Stripp is Director of Cambridge University Summer Schools on British Secret Services.