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Click for larger image ULTRA and Bletchley Park DVD
Price: US $24.95
An account of how Anglo-American cryptographers first solved some of the Abwehr's hand ciphers in 1939, and then depended on a double agent to break into channels encrypted with the Enigma machine in 1940. The result would have a major impact on the campaign in North Africa, the Battle of the Atlantic and the success of D-Day, perhaps shortening the conflict by as much as two years.
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