TheCodeBreakers
sank the American gunboat Panay, raped Nanking, molested American
hospitals and missions in China, and raged at American embargoes on
oil and steel scrap. It became increasingly evident that Nippon's march of
aggression would eventually collide with American rectitude. The
mounting curve of tension was matched by the rising output of the
American cryptanalytic agencies. A trickle of MAGIC in 1936 had become a
stream in 1940. Credit for this belongs largely to Major General Joseph
O. Mauborgne, who became Chief Signal Officer in October, 1937.
Mauborgne had long been interested in cryptology. In 1914, as a
young first lieutenant, he achieved the first recorded solution of a cipher
known as the Playfair, then used by the British as their field cipher. He
described his technique in a 19-page pamphlet that was the first
publication on cryptology issued by the United States government. In
World War I, he put together several cryptographic elements to create the
annaabi.ee 
