Overview of Cryptology and the Army

This first, unnumbered, Manly article gives an overview of the “ears” of the armed services—the wireless interception services and the cipher bureaus. Manly discusses how wireless telegraphy transformed the communications of armies and the subsequent increase in the necessity of message secrecy and hence cryptology. Manly then gives a short history of codes and ciphers and motivates their use during the Great War. Untitled in the Friedman Collection, this article seems to belong at the beginning of the Manly sequence.