"Discusses different methods for creating secret codes"--Provided by publisher.

During WWII, Japan's navy relied on secret codes to communicate battle plans. By early 1942, US experts had cracked the code. The Japanese had planned a surprise attack on US Navy ships, but now the Americans knew the attack was coming. They turned the tables on the enemy and won a decisive victory. Math has always been key to warfare. Scientists use mathematical calculations to understand how missiles fly, or how to build faster airplanes. Soldiers...

"Discusses different methods of secret communications used by spies, such as Morse code, the Enigma machine, the Najavo language, and digital steganography, and includes career information"--

An American computer hacker operating in Southeast Asia attempts to break a World War II cypher to find the location of a missing shipment of gold. The gold was stolen by the Japanese during the war. By the author of The Diamond Age.

Traces the life of Elizebeth Smith, who met and married groundbreaking cryptologist William Friedman and worked with him to discover and expose Nazi spy rings in South America by cracking multiple versions of the Enigma machine.

"A nonfiction chronicle of the courageous efforts of remarkable young women recruited by the US government to crack German and Japanese military codes during World War II."--Provided by publisher.

Joining the elite Bletchley Park codebreaking team during World War II, three women from very different walks of life uncover a spy's dangerous agenda years later against the backdrop of the royal wedding of Elizabeth and Philip.

While working at Bletchley Park transcribing decrypted signals from the German Army as it marches into Leningrad, Honey Deschamps begins to receive mysterious packages from Russia containing small pieces of amber that suggest a coded message.

An examination of one of the most important yet underexplored aspects of World War II--intelligence--shows how espionage successes and failures by the United States, Britain, Russia, Germany, and Japan influenced the course of the war and its final outcome.