Title: The SIGINT secrets
Description: This book traces the origin of the British signal intelligence and gives us a detailed account of SIGINT development up to the present day. The book also includes the persecution of one of Bietchley Park's most prominent World War 11 heroes.- Gordon Welchman
Subjects: Electronic surveillance, Great Britain, Great Britain. Government Communications Headquarters, History, Military intelligence, Great britain, defenses, Intelligence service
Places: Great Britain
Time periods: 20th century