Battle of Wits - The Complete Story of Codebreaking in World War II (Paperback, New ed)

Over the last two years, nearly 5,000 documents detailing US and British codebreaking during WWII have been declassified. These include the complete notebooks of Alan Turing, full texts of deciphered U-boat cables, and master cryptanalyst William Friedman's diagram of the Japanese purple cipher machine - which he deduced without ever having seen the actual device. By drawing on these files, plus numerous other documents and oral histories, Stephen Budiansky has written a gripping narrative of codebreaking during the war.