G-2 refers to the military intelligence staff of a unit in the United States Army. It is contrasted with G–1 (personnel), G–3 (operations), G–4 (logistics) and G-5 (civil-military operations). These "G" sections have counterparts in other branches of the service, the U.S. Navy using an N– designation and the Joint Staff the prefix J.
G-2 intelligence gathering and interpretation traces its history to the American Revolution. The Military Intelligence Service was formed during World War II. In time, this evolved into the Military Intelligence Corps, one of the basic branches of the United States Army.
- Military Intelligence Corps (United States Army)
- Counterintelligence Corps
- MI5, the British intelligence agency tasked with domestic counter-intelligence and security
- MI6, the British intelligence agency tasked with foreign intelligence
- Carter,Jr., Archer & Murray (July 1988). "Description of Army Staff Functions: Targets for Planning Aids". http://www.dtic.mil/dtic/tr/fulltext/u2/a197449.pdf.
- Koch, Oscar W., Brig. Gen.: G-2: Intelligence for Patton
- "Military Intelligence Corps". Branchorientation.com. http://www.branchorientation.com/militaryintelligence/profile.html. Retrieved 20 May 2011.
- Berkowitz, Bruce D., and Allan E. Goodman. Strategic Intelligence for American National Security. Princeton, NJ: Princeton University Press, 1989.
- Finnegan, John Patrick, and Romana Danysh. Military Intelligence. Washington, D.C.: Center of Military History, United States Army, 1998.
- Miller, Nathan. Spying for America: The Hidden History of U.S. Intelligence. New York: Paragon House, 1989.
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