The German Army

Breaking German Army Ciphers

A large number of encrypted German Army radio messages, from 1941 and 1945, have survived the end of the Second World War to the present day. Most of these messages are enciphered on the three-wheel, steckered Wehrmacht Enigma. We present an account of a ciphertext-only cryptanalysis of these messages and give details of the Enigma procedures used in the networks.

Army Medical Service and the Army Estimates

the new army

although the history of iran is rife with conquerors and military campaign, but there were not any national and real army at all. in fact, the idea of a single unified army has no precedent in iranian history. ever in the timesthe achaemenid empire, the rulers had felt safer with separate units of armed forces. this mechanism allowed them to play on one group against another so  prevented any c...

A World War II German Army Field Cipher and How We Broke IT

As he thumbed through his manual, my memory reverted to a cryptanalysis course that my fiancee had taken at Brooklyn College, given by Professor Jack Wolfe of the math department. She and I would sit in a sunny meadow in Prospect Park, and I helped with the frequency counts. My reverie was broken by the information that I was to be sent to Vint Hill Farms Station, near Warrenton, Virginia close...

The Army Medical Warrant