Turing report to Bletchley Park
Time: Monday Sep 4, 1939
Place: Bletchley Park, England
Details: On 4 September 1939, the day after the UK declared war on Germany, Turing reported to Bletchley Park, the wartime station of GC&CS. Specifying the bombe was the first of five major cryptanalytical advances that Turing made during the war. The others were: deducing the indicator procedure used by the German navy; developing a statistical procedure for making much more efficient use of the bombes dubbed Banburismus; developing a procedure for working out the cam settings of the wheels of the Lorenz (Tunny) dubbed Turingery and, towards the end of the war, the development of a portable secure voice scrambler at Hanslope Park that was codenamed, Delilah.
Best-effort ordering. Some events may appear out of order since many are only known to the year, but they are usually around the same period.
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On This Day - 4 September
























































4 September 1939




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