The Man Who Broke Enigmas
Date of publication: September 2010
Publisher: Biteback Publishing
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The highly eccentric Alfred Dillwyn Knox, known simply as Dilly was one of the leading figures in the British codebreaking success of the two world wars. During the first, he was chief codebreaker in the Admiralty, breaking the German navy's main flag code, before going on to crack the German Enigma cipher during the Second World War. At Bletchley Park he enjoyed the triumphant culmination of his life's work: a reconstruction of the Enigma machine used by the Abwehr, the German Secret Service. This ensured the British were fully aware of what the German commanders knew about the Allied plansfor the invasion of Europe, allowing MI5 and MI6 to use captured German spies to feed flase information back to the Nazi spymasters. Dilly's codebreaking skills played a vital part in the deception operation that ensured the success of the D-Day landings.