This is a history of the intercept service in Europe from 1908-1945, as told by Flicke who spent 26 years in the German intelligence service. He gives a persona

SIGNALS INTELLIGENCE, or SIGINT, is the interception and evaluation of coded enemy messages. From Enigma to Ultra, Purple to Lorenz, Room 40 to Bletchley, SIGIN

An omnibus edition of nine volumes of postwar histories declassified by the National Security Agency in 2010. The research was carried out by the Army Security

Have you ever wondered how successful Hitler's codebreakers were at breaking Allied codes during World War 2? The wartime story of codebreaking has almost exclu