From LORENZ to ENIGMA, Room 40 to Bletchley, SIGINT reveals the story of the secret signals of both world wars

The following paper will examine the nature of the Soviet electronic penetration and the damage assessment of Soviet access to typewriters at the U.S. embassy i

This publication joins two cryptologic history monographs that were published separately in 1989. In part I, the author identifies and presents a thorough accou

“Demonstrates that the intelligence division . . . had a more significant role in WWII . . . making indispensable contributions to the invasion at Normandy.�

In the eyes of history, Japanese intelligence in World War II has fared very poorly. However, these historians have most often concentrated on the later years o