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Sir Arthur Wilfred "Bill" Bonsall (25 June 1917 – 26 November 2014) was director of the British signals intelligence agency, GCHQ—a post he held from 1973 to 1978. ==Career== Educated at Bishop's Stortford College, Bonsall went on to study modern languages at St Catharine's College, Cambridge〔''Burke's Peerage''〕 before joining the Government Code and Cypher School at Bletchley Park.〔James Bamford, ''The Puzzle Palace: A Report on America's Most Secret Agency'', Penguin, 1983〕 From 1940, Bonsall served in the German Air Section under Josh Cooper, studying the Luftwaffe. In 1942 he helped to create a series of daily reports known as the BMP (from the initials of its three co-creators, Bonsall, Moyes and Prior). They were based primarily on Luftwaffe radio-telephony and low-grade codes and were issued at Secret Pearl level. Later reports included information from Luftwaffe Enigma traffic and were issued at Top Secret Ultra level. They dealt with the operations of the Luftwaffe defensive organisation and assisted the Allied Air Commands to design their tactics.〔(March 1944: Invasion postponed ) Bletchley Park Archives〕 Bonsall stayed on with the organisation, which became GCHQ after the war, and served as its director from December 1973 to 1978. He was knighted in 1977. After retirement he served for a period as a tax commissioner. In later retirement he was concerned to preserve a more accurate record of the non-Enigma side of Bletchley Park, especially the work of the German Air Section. The first outcome was a talk given to a Cheltenham Probus club, later developed into a privately printed family memoir entitled 'Another Bit of Bletchley'. In 2007 he presented a paper to a research group in Oxford on ''Bletchley Park and the RAF Y Service, some recollections.''〔 (Also published in the journal ''Intelligence and National Security'' Vol 23 Dec 2008 No 6, pp 827-841) 〕 A more formal version of 'Another Bit of Bletchley' was published as no. 17 in the Bletchley Park Trust Report series.〔September 2009; ISBN 978-1-906723-10-1〕 This was followed in 2011 by another report, no. 21 in the same series, entitled 'An Uphill Struggle',〔BP Trust Report No 21, Aug 2011, ISBN 978-1-906723-21-7〕 dealing with the internal battle to overcome Air Ministry failure to understand the value to RAF Commands of tactically derived signals intelligence. He collaborated closely with Wg Cdr John Stubbington in the latter's 2012 account of BMP reports by the German Air Section.〔BP Trust Report No 29, March 2012, ISBN 978-1-906723-29-3〕 In September 2013, he gave an interview about his career to the BBC. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arthur Bonsall」の詳細全文を読む スポンサード リンク
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