List of former United States special operations units

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Former United States special operations units are disbanded or otherwise inactive unconventional warfare units of the United States military. Most units were created to fulfill specific duties within a particular conflict, and were disbanded once that conflict ended. All branches of the United States armed forces – the Army, Navy, Marine Corps and Air Force have fielded special operations units. For existing special operations units, see United States Special Operations Forces.

The Civil War[edit]

World War I[edit]

World War II[edit]

Korean War[edit]

Vietnam War[edit]

  • Fast Patrol Craft Patrol Craft Fast (PCF), also known as Swift Boats, were all-aluminum, 50-foot (15 m) long, shallow-draft vessels operated by the United States Navy for counterinsurgency (COIN) operations during the Vietnam War.
  • Long Range Reconnaissance Patrols (LRRPs or "Lurps"); Vietnam War-era deep reconnaissance and raider units
  • MIKE Force Mobile Strike Force Command; Corps I, II, III, IV
  • Tiger Force (Vietnam War); reconnaissance commando (recondo) platoon in the 1/327th Infantry
  • Project "Leaping Lena" (Vietnam War); Recondo course for South Vietnamese teams, trained by U.S. Special Forces, became Project DELTA.
  • Project DELTA (Vietnam War); 5th Special Forces group long-range reconnaissance unit; precursor to MACV-SOG
  • Military Assistance Command, Vietnam Studies and Observations Group (MACV-SOG), a joint covert Vietnam War-era task force composed of 2,000 American soldiers and over 8,000 indigenous mercenaries
  • Project Sigma and Project Omega (Vietnam War), MACV-SOG recon units that operated in Cambodia
  • Phoenix Program; joint CIA and US military project based around the identification and elimination of the civilian supporters of the Viet Cong.
  • Project 404/Palace dog was a USAF program that supplied support personnel in civilian clothing to the Royal Laotian Air Force. Long range goal was production of a self-sufficient RLAF.
  • Raven FACs were USAF pilots in civilian clothing assigned to support the Royal Laotian Air Force by directing air strikes from small aircraft.