List of former United States special operations units

Former United States special operations units are disbanded or otherwise dormant

United States Special Operations Forces

.

The Civil War

Jessie Scouts, Union Army scout unit that operated disguised as Confederate States Army soldiers

1st Alaskan Combat Intelligence Platoon (Provisional) - "Castner's Cutthroats"
1st Special Service Force – "
Devil's Brigade
", a joint U.S.-Canadian unit
5307th Composite Unit (Provisional), GALAHAD Task Force – "Merrill's Marauders" – "Charles N. Hunter"^[1]
5332nd Brigade (Provisional) – MARS Task Force^[1]^[2]
475th Infantry Regiment (Long Range Penetration, Special)^[1]^[2]
124th Cavalry Regiment (Special) – "MARS Men", Texas Army National Guard^[2] – 1LT Jack L. Knight, the only WWII SOF Soldier Medal of Honor^[3]
612th Field Artillery Battalion (Pack)^[4]
613th Field Artillery Battalion (Pack)^[4]
First American Volunteer Group, "Flying Tigers"
Ranger Battalions
Alamo Scouts
Alaskan Scouts
Marine Parachute Battalions – the "Paramarines"
Marine Raider Battalions - the "Marine Raiders"
United States Marine Corps Amphibious Reconnaissance Battalion, "VAC Amphib Recon Company" or "FMFPAC Amphib Recon Battalion"
Scout Snipers and Division Recon

Air Resupply And Communications Service (ARCS)
Combined Command Reconnaissance Activities, Korea (CCRAK)
Joint Advisory Commission, Korea (JACK) (Korean War), CIA-affiliated covert special operations unit
United Nations Partisan Infantry Korea (UNPIK)

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 GAMMA/Project SIGMA MACV-SOG recon units that operated in Cambodia
Project OMEGA Special Forces unit tasked to provide I Field Force Vietnam an SR capability in remote areas
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.

39th Special Forces Detachment (1952–1984), in Berlin, Germany, a classified unit that conducted unconventional warfare during the cold war
8th Special Forces Group (1963–1972), 11th Special Forces Group (1961–1994) and 12th Special Forces Group (1961–1994) (disbanded Army Special Forces Groups
)

Special Operation - Reconnaissance, joint Marine-Navy reconnaissance units in the late 70s
Task Force Bayonet, a Joint Task Force specialised in Foreign Internal Defense (FID) duties for Latin American countries; mainly composed of Special Forces, but also included United States Navy SEALs, Delta Force and Intelligence Support Activity
operators

SEASPRAY, an aviation unit for military covert operations during the 1980s
Red Cell, U.S. "Tiger team" active in the 1980s
Task Force Ranger (Operation Gothic Serpent), U.S Army Special Ops(75th Ranger Regiment, 3rd Ranger Battalion/ 160th SOAR/ Special Ops Detachment DELTA or Delta Force, now known as CAG)task force deployed to Somalia
between August and October 1993

Task Force 11 (Operation Enduring Freedom), joint Army/Navy task force created to capture or kill senior al-Qaeda and Taliban leaders in Afghanistan
Task Force 77
.
United States Marine Corps Forces Special Operations Command (MARSOC)
Observer Group
Marine Corps Test Unit#1

^ ^a ^b ^c Sacquety, Troy (2008). "GENERAL ARSOF HISTORY Allied Long Range Penetration Groups (LRPG) for Burma The Chindits, the Marauders, and the MARS Task Force". 4. 4 (1). Fort Bragg, NC: US Army Special Operations Command History Office. Archived from the original on 7 February 2023.
^ ^a ^b ^c Sacquety, Troy J. (2009). "RANGERS HISTORY Over the Hills and Far Away The MARS Task Force, the Ultimate Model for Long Range Penetration Warfare". Veritas. 5 (4). Fort Bragg, NC: US Army Special Operations Command History Office. Archived from the original on 4 January 2024.
^ "1LT Jack L. Knight". US Army Special Operations Command History Office. For Bragg, NC. Archived from the original on 9 January 2023.
^ ^a ^b "GENERAL ARSOF HISTORY Of Mules and Men The 612th and 613th Field Artillery Battalions (Pack) in Burma". Veritas. 1 (2). Fort Bragg, NC: US Army Special Operations Command History Office. Archived from the original on 7 February 2023.

http://www.specialoperations.net/Web%20Docs/Project404History.doc Accessed 11 October 2008.
The Ravens: The Men Who Flew in America's Secret War in Laos. Christopher Robbins. Crown Publishers/Pocket Books, 1987.
www.ravens.org Accessed 11 October 2008.
Veritas: Journal of US Army Special Operations History