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 supplied vital intelligence known as Ultra to the allied forces. Yet, only recently have the Polish codebreakers received international recognition. This text offers a concise, up-to-date history of the Enigma decryption in Poland and the use of this achievement in Poland and England.
This book tells a more complete and accurate story about Polish contributions to the cracking of the German Enigma code. In tone, it seems to display wounded national pride in its attempt to set the record straight; it would have been better simply to lay out the history and let facts speak for themselves. But a good book, and extremely valuable in helping to understand what really happened.
Great Historical book about how the Enigma was broken. Biographies of the men who participated. Later parts of the book address how the attempts were shown by current media and of those, which ones are the more accurate ones.