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Enigma: How the Poles Broke the Nazi Code
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by
Jerzy Straszak, Wadysaw Kozaczuk
In 1933, three Polish mathematicians led by Marian Rejewski succeeded in breaking the German Enigma cipher, which the Germans considered unbreakable. In 1939, just before the outbreak of war, the Poles shared their knowledge with French and British intelligence services. This led to the powerful British decoding operation at Bletchley Park, which ...
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