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 surpris

Discusses military uses of math including navigation, cryptography, ballistics, logistics, and more.

Glimpses of cartography and cryptology for young readers.

Learn about ciphers and codes--the tools used to keep a message secret. See how ciphers were used by the patriots in the American Revolutionary War. Find out ho

Dive into the secret history of . . . secrets! Cryptology is the art and science of secret communication, and its purpose is to protect precious information and