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John Tiltman

For the British architect and property manager, see John Hessell Tiltman (property manager).

John Hessell Tiltman
British cryptanalysts Harry Hinsley, Sir Edward Travis, and John Tiltman in Washington D.C., November 1945
Nickname(s)"The Brig"
Born(1894-05-25)25 May 1894
London, England
Died10 August 1982(1982-08-10) (aged 88)
Hawaii, United States
AllegianceUnited Kingdom
Service/branchBritish Army
Years of service1914–1946
RankBrigadier
Service number11225
UnitKing's Own Scottish Borderers
Battles/warsWorld War I
World War II
AwardsMilitary Cross (1917)[1]
OBE (1930)[1]
CBE (1944)[2]
CMG (1954)[3]
Legion of Merit (1946)[4]
Spouse(s)
Tempe Robinson
​
(m. 1926)​
[5]
ChildrenTempe Anne Denzer

Brigadier John Hessell Tiltman, CMG, CBE, MC (25 May 1894 – 10 August 1982) was a British Army officer who worked in intelligence, often at or with the Government Code and Cypher School (GC&CS) starting in the 1920s. His intelligence work was largely connected with cryptography, and he showed exceptional skill at cryptanalysis. His work in association with Bill Tutte on the cryptanalysis of the Lorenz cipher, the German teleprinter cipher, called "Tunny" (for tunafish) at Bletchley Park, led to breakthroughs in attack methods on the code, without a computer. It was to exploit those methods, at extremely high speed with great reliability, that Colossus, the first digital programmable electronic computer, was designed and built.[6]

  1. ^ a b "John H. Tiltman" (PDF). Cryptologic Quarterly. Archived from the original (PDF) on 28 October 2011. Retrieved 12 November 2011.
  2. ^ "No. 36309". The London Gazette (Supplement). 31 December 1943. p. 20.
  3. ^ "No. 40053". The London Gazette (Supplement). 29 December 1953. p. 5.
  4. ^ "No. 38359". The London Gazette. 20 July 1948. p. 1.
  5. ^ Liberty, Harold (2022). The Forgotten Giant of Bletchley Park: Brigadeer John Tiltman. Pen & Sword Books Ltd. ISBN 978 1 39908 961 6.
  6. ^ Barber, Nicola (21 December 2015). Who Broke the Wartime Codes?. Capstone Press. p. 45. ISBN 978-1-4846-3559-9.
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