The topic cryptanalysis is discussed in the following articles:
major treatment    • TITLE: cryptology     SECTION:
Cryptanalysis     Cryptanalysis, as defined at the beginning of
this article, is the art of deciphering or even forging
communications that are secured by cryptography. History abounds
with examples of the seriousness of the cryptographer’s failure
and the cryptanalyst’s success. In World War II the Battle of
Midway, which marked the turning point of the naval war in the
Pacific, was won by the United States...  development in World
War II    • TITLE: 20th-century international relations
(politics)     SECTION: Science and technology in wartime