Man has created codes to keep secrets and has broken codes to learn those secrets since the time of the Pharaohs. For 4,000 years, fierce battles have been waged between code makers and code breakers, and the story of these battles is civilization's secret history, the hidden account of how wars were won and lost, diplomatic intrigues foiled, business secrets stolen, governments ruined, and computers hacked. David Kahn's The Codebreakers takes the measure of what codes and code breaking have meant in human history in a single comprehensive account, astonishing in its scope and enthralling in its execution. On the Military Intelligence Branch History Reading List.

Includes maps of: Routes Followed by American Airplanes and by Japanese on Mission to Shoot Down Admiral Isoroku Yamamoto.