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After the end of World War II, all the Western allies began a rapid drawdown of military forces, including those of signals intelligence. At the time, the US still had a COMINT organization split between the Army and Navy. [1] A 1946 plan listed Russia, China, and a [redacted] country as high-priority targets.
The United States Army Security Agency (ASA) was the United States Army's signals intelligence branch from 1945 to 1977. [1] The Latin motto of the Army Security Agency was Semper Vigilis (Vigilant Always), which echoes the declaration, often mistakenly attributed to Thomas Jefferson, that "The price of liberty is eternal vigilance." [2] [3]
Air Intelligence Agency was redesignated as a Primary Subordinate Unit (PSU) subordinate to Air Combat Command) on 1 February 2001. [2] Air Intelligence Agency was redesignated as the Air Force Intelligence, Surveillance, and Reconnaissance Agency on 8 June 2007 (and became a FOA again, subordinate to HQ, USAF/Intelligence Directorate (HAF/XOI ...
Prisoners of war (POWs) or detainees; Refugees; Routine patrolling (military police, patrols, etc.) Traveler debriefing [broken anchor] (e.g. CIA Domestic Contact Service) MI6 is often thought to use human intelligence to operate in different countries or Britain itself to protect the country from global affairs. However, this is usually ...
Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). [1]
During World War II and the early years of the Cold War, the Venona project was a source of information on Soviet intelligence-gathering directed at the Western military powers. Although unknown to the public, and even to Presidents Franklin D. Roosevelt and Harry S. Truman , these programs were of importance concerning crucial events of the ...
Measurement and signature intelligence (MASINT) is a technical branch of intelligence gathering, which serves to detect, track, identify or describe the distinctive characteristics (signatures) of fixed or dynamic target sources. This often includes radar intelligence, acoustic intelligence, nuclear intelligence, and chemical and biological ...
Human intelligence (HUMINT, pronounced / ˈ h j uː m ɪ n t / HEW-mint) is intelligence-gathering by means of human sources and interpersonal communication. It is distinct from more technical intelligence-gathering disciplines, such as signals intelligence (SIGINT), imagery intelligence (IMINT), and measurement and signature intelligence ...