Codes and Signals
Codes and Signals: Breaking the Spy Games of World War II and the Vietnam War
This downloadable PDF focuses on code-breaking during wartime. Subjects covered: Agnes Meyer Driscoll, a Yeoman (F) decoding German messages and codes in World War I and helped to decode Japanese intelligence during World War II; making a book cipher and scytale; activities on makling a cryptogram and cipher disk.
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