Commander Alexander Guthrie Denniston (1 December 1881 – 1 January 1961) was a Scottish codebreaker, deputy head of the Government Code and Cypher School (GC&CS) and hockey player. Denniston was appointed operational head of GC&CS in 1919 and remained so until February 1942.
Commander Alexander Guthrie Denniston (1 December 1881 – 1 January 1961) was a Scottish codebreaker, deputy head of the Government Code and Cypher School (GC&CS) and hockey player. Denniston was appointed operational head of GC&CS in 1919 and remained so until February 1942.
Source: Wikipedia "Alastair Denniston" · CC BY-SA 4.0
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