The terms Tier One Special Mission Unit and Special Missions Unit (SMU) are used, particularly in the United States, to describe some highly secretive and elite military special operations forces. [1] Special mission units have been involved in high-profile military operations, such as the killing of Osama bin Laden.
The United States military definition in the Department of Defense Dictionary of Military and Associated Terms comes from Joint Publication 3-05.1 – Joint Special Operations Task Force Operations (JP 3-05.1). [2] JP 3-05.1 defines a "special mission unit" as "a generic term to represent a group of operations and support personnel from designated organizations that is task-organized to perform highly classified activities." [3]
The U.S. government does not acknowledge which units specifically are designated as special missions units, [4] only that they have special mission units within the Joint Special Operations Command (JSOC), which is part of U.S. Special Operations Command (SOCOM). In the early 1990s then–Commander in Chief of SOCOM, General Carl Stiner, identified both Delta Force and SEAL Team Six as permanently assigned special mission units in congressional testimony and public statements. [5] In 1998, Under Secretary of Defense for Policy Walter B. Slocombe publicly referred to special mission units during a briefing to the Senate Armed Services Committee: "We have designated special mission units that are specifically manned, equipped and trained to deal with a wide variety of transnational threats" and "These units, assigned to or under the operational control of the U.S. Special Operations Command, are focused primarily on those special operations and supporting functions that combat terrorism and actively counter terrorist use of weapons of mass destruction (WMD). These units are on alert every day of the year and have worked extensively with their interagency counterparts." [6]
As of 2023, the U.S. military has publicly acknowledged five units as Special Mission Units:
The Australian Army's elite Special Air Service Regiment are described as being "special missions units with unique capabilities within the Australian Defence Force". [18] The Regiments are components of Australia's Special Operations Command (SOCOMD), and are tasked with conducting "sensitive strategic operations, special recovery operations, training assistance, special reconnaissance and precision strike and direct action". [18]
The SASR currently has four sabre squadrons, known as 1, 3 and 4 Squadron. [19] The first two squadrons rotate through the two roles performed by the Regiment; one squadron conducts the counter terrorism/special recovery (CT/SR) role, and the remaining squadrons conduct the warfighting/reconnaissance role, while 4 Squadron is responsible for collecting intelligence and also supports the Australian Secret Intelligence Service. [20]
The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting small-unit special operation missions in maritime, jungle, urban, arctic, mountainous, and desert environments. SEALs are typically ordered to capture or kill high-level targets, or to gather intelligence behind enemy lines. SEAL team personnel are hand selected, highly trained, and possess a high degree of proficiency in direct action (DA), and special reconnaissance (SR), among other tasks like sabotage, demolition, intelligence gathering, and hydro-graphic reconnaissance, training, and advising friendly militaries or other forces.
The 1st Special Forces Operational Detachment–Delta, referred to variously as Delta Force, Combat Applications Group (CAG), or within Joint Special Operations Command (JSOC), Task Force Green, is a special operations force of the United States Army, under operational control of JSOC. The unit's missions primarily involve counterterrorism, hostage rescue, direct action, and special reconnaissance, often against high-value targets.
The 160th Special Operations Aviation Regiment (Airborne), abbreviated as 160th SOAR (A), is a special operations force of the United States Army that provides helicopter aviation support for special operations forces. Its missions have included attack, assault, and reconnaissance, and these missions are usually conducted at night, at high speeds, low altitudes, and on short notice.
The 75th Ranger Regiment, also known as Army Rangers, is the premier light infantry unit and special operations force within the United States Army Special Operations Command. The regiment is headquartered at Fort Moore, Georgia and is composed of a regimental headquarters company, a military intelligence battalion, a special troops battalion, and three Ranger battalions.
The Special Activities Center (SAC) is a division of the United States Central Intelligence Agency responsible for covert and paramilitary operations. The unit was named Special Activities Division (SAD) prior to 2015. Within SAC there are two separate groups: SAC/SOG for tactical paramilitary operations and SAC/PAG for covert political action.
Task Force 20 is a temporary combat force designation that has been used several times and may still be used by separate parts of the United States armed forces. The longer-established iteration was a part of the United States Second Fleet in the Atlantic from after the Second World War. This was part of the formal United States Military Communications-Electronic Board system.
The Joint Special Operations Command (JSOC) is a joint component command of the United States Special Operations Command (USSOCOM) and is charged with studying special operations requirements and techniques to ensure interoperability and equipment standardization, to plan and conduct special operations exercises and training, to develop joint special operations tactics, and to execute special operations missions worldwide. It was established in 1980 on recommendation of Colonel Charlie Beckwith, in the aftermath of the failure of Operation Eagle Claw. It is headquartered at Pope Field.
The 3rd Ranger Battalion is the third of three Ranger Battalions belonging to the United States Army's 75th Ranger Regiment. It is currently based at Fort Moore, Georgia.
The Special Forces Support Group (SFSG) is a special forces unit of the British Armed Forces. The SFSG was formed officially on 3 April 2006 to provide support to the Special Air Service, the Special Boat Service and the Special Reconnaissance Regiment on operations. It is a tri-service unit, composed of the 1st Battalion, The Parachute Regiment, a company of Royal Marine Commandos, and a flight (platoon) from the Royal Air Force Regiment.
The 24th Special Tactics Squadron is one of the Special Tactics units of the United States Air Force Special Operations Command (AFSOC). Garrisoned at Pope Field, North Carolina, it is the U.S. Air Force component of Joint Special Operations Command (JSOC). The unit's webpage describes it as "the Air Force's special operations ground force".
The United States Army Intelligence Support Activity (USAISA), frequently shortened to Intelligence Support Activity (ISA), also known at various times as Joint Reconnaissance Evaluation Group (JREG), Mission Support Activity (MSA), Office of Military Support (OMS), Field Operations Group (FOG), Studies and Analysis Activity (SAA), Tactical Concept Activity, Tactical Support Team, and Tactical Coordination Detachment, and also nicknamed "The Activity" and the Army of Northern Virginia, is a United States Army Special Operations unit which serves as the intelligence gathering component of Joint Special Operations Command (JSOC). Within JSOC, the unit is often referred to as Task Force Orange. Originally subordinated to the US Army Intelligence and Security Command (INSCOM), it is one of the least known intelligence components of the United States military, tasked with clandestine HUMINT operations and collecting actionable intelligence during or prior to JSOC missions.
The history of the British Army's Special Air Service (SAS) regiment of the British Army begins with its formation during the Western Desert Campaign of the Second World War, and continues to the present day. It includes its early operations in North Africa, the Greek Islands, and the Invasion of Italy. The Special Air Service then returned to the United Kingdom and was formed into a brigade with two British, two French and one Belgian regiment, and went on to conduct operations in France, Italy again, the Low Countries and finally into Germany.
The United States Army Aviation Technology Office (ATO), known as Flight Concepts Division (FCD) before 2017, is a component of the United States Army that provides discreet, sometimes clandestine helicopter aviation support primarily to Joint Special Operations Command. The unit provides highly specialized flights for special operations forces during covert and clandestine missions, and also has a bleeding-edge development role, leading research in emerging technologies for Army aviation. It is a part of the infrastructure of covert special operations airlift more secretive than the Army's 160th Special Operations Aviation Regiment, joining at least three other units across the services and within JSOC itself: the joint Aviation Tactics Evaluation Group (AvTEG), and the Air Force's 66th Air Operations Squadron and 427th Special Operations Squadron. Part of the U.S. Army Aviation Flight Test Directorate, the unit is located at Felker Army Airfield along the James River on Fort Eustis, and has been described as "the best of the very best" and "one of the most secretive U.S. military aviation units known to be in existence today."
Joint Special Operations Command Task Force in the Iraq War was a joint American and British special operations unit, of which little is publicly known. It is described as a "hunter-killer team" with its core made up of the United States Army's 1st Special Forces Operational Detachment-Delta and the 75th Ranger Regiment, as well as the United States Naval Special Warfare Development Group and members of the United States Air Force's 24th Special Tactics Squadron, all under Joint Special Operations Command (JSOC) and elements from the United Kingdom Special Forces, including the Special Air Service, Special Boat Service (SBS), Special Reconnaissance Regiment (SRR), 18 (UKSF) Signal Regiment and the Special Forces Support Group (SFSG). The unit was reported to be responsible for the cross border raid into Syria from Iraq in October 2008 that resulted in eight deaths including Abu Ghadiya, along with several US operations in the Horn of Africa targeting al-Qaeda.
Operation Marlborough was the code name of a mission carried out by M Squadron Special Boat Service. The mission involved an SBS team from Task Force Black, in Baghdad, Iraq, on 23 July 2005 with support the Special Air Service and U.S. military assets.
The United States Special Operations Command is the unified combatant command charged with overseeing the various special operations component commands of the Army, Marine Corps, Navy, and Air Force of the United States Armed Forces. The command is part of the Department of Defense and is the only unified combatant command created by an Act of Congress. USSOCOM is headquartered at MacDill Air Force Base in Tampa, Florida.