recounts the Allies' desperate efforts to break the German code during World War II by using a working model of the German Enigma machine that the Polish intelligence service had reconstructed.
Account of the incredible intelligence war fought for the mastery of Enigma, the code used by mose branches of the German armed forces in World War II. Beginning ten full years before the eruption of hostilities in September 1939 and increasing in intensity throughout the war, the Engima war was won by the Allies through the success of Ultra, the Allied codebreaking operation at Bletchley Park, England. Ultra remained until recently one of the best-kept secrets of World War II. --

Great book. This tells about the exciting U-Boat chapter of WWII and it is very good. Tons of pictures and archival photographs as well. ( )

Interesting subject, terrible book. ( )