Battle of Wits
Based on the most up-to-date information, this history of World War II codebreaking focuses on the prodigious efforts by the Allies to decipher the military and diplomatic communications of Germany and Japan. It provides an overview of British and American operations, including stories of the role played by individuals like Alan Turing and Ian Fleming, and reveals once-classified information about the tactical advantages gained when the Allies were successful in cracking the complex codes--thus saving many lives and bringing the war toward a successful conclusion.

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