
The term Tier One Special Mission Unit or Special Missions Unit (SMU) is a term sometimes used, particularly in the United States, to describe some highly secretive military
special operations forces. Special mission units have been involved in high-profile military operations, such as the
killing of Osama bin Laden.
United States
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). 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."
The U.S. government does not acknowledge which units specifically are designated as special missions units, 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. 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."
List of United States military SMU's
So far, seven US military units have been publicly acknowledged as Special Mission Units:
*Joint Special Operations Command (JSOC)
**The
Army's
1st Special Forces Operational Detachment – Delta (1st SFOD-D), commonly known as Delta Force, called Task Force Green within JSOC.
**The
Navy's
Naval Special Warfare Development Group (DEVGRU), commonly known as SEAL TEAM 6, called Task Force Blue within JSOC.
**The
Air Force's
24th Special Tactics Squadron
The 24th Special Tactics Squadron is one of the Special Tactics units of the United States Air Force Special Operations Command (AFSOC). It is the U.S. Air Force component to Joint Special Operations Command (JSOC). It is garrisoned at Pope Fie ...
(24 STS), called Task Force White within JSOC.
**The Army's
Intelligence Support Activity, officially identified only by a series of code names which are replaced every two years. Originally tasked by the Army and subordinate to
INSCOM, following the
September 11 attacks control shifted to JSOC, who call the unit Task Force Orange.
*United States Army Special Operations Command (USASOC)
**The
75th Ranger Regiment
The 75th Ranger Regiment, also known as Army Rangers, is the U.S. Army's premier light infantry unit and special operations force within the United States Army Special Operations Command. The regiment is headquartered at Fort Benning, Georgi ...
's
Regimental Reconnaissance Company (RRC) is part of
United States Army Special Operations Command (USASOC), but is often gained by JSOC and has been described as a Special Mission Unit. It is called Task Force Red within JSOC.
Additional support
Units from the Army's
Special Forces
Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...
,
75th Ranger Regiment
The 75th Ranger Regiment, also known as Army Rangers, is the U.S. Army's premier light infantry unit and special operations force within the United States Army Special Operations Command. The regiment is headquartered at Fort Benning, Georgi ...
,
160th Special Operations Aviation Regiment
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 include ...
(160 SOAR), and
Aviation Technology Office (ATO), and the joint Aviation Tactics Evaluation Group (AvTEG) are controlled by JSOC when deployed as part of JSOC Task Forces such as
Task Force 121
Task Force 121 was a United States Department of Defense special operations task force. TF121 was a multi-service force from Joint Special Operations Command, made up of operators from the U.S. Army's Delta Force, 75th Ranger Regiment, and ...
and
Task Force 145.
Australia
The
Australian Army's elite
Special Air Service Regiment is described as being a "special missions unit with unique capabilities within the Australian Defence Force".
The Regiment is a component of Australia's
Special Operations Command (SOCOMD), and is tasked with conducting "sensitive strategic operations, special recovery operations, training assistance,
special reconnaissance and precision strike and
direct action
Direct action originated as a political activist term for economic and political acts in which the actors use their power (e.g. economic or physical) to directly reach certain goals of interest, in contrast to those actions that appeal to oth ...
".
The SASR currently has four
sabre squadron
A sabre squadron, or (in US English) saber squadron, is a unit of sub-battalion size, in some military ground forces.
The term originated in the British Army, and is derived from the sabre traditionally used by soldiers mounted on horses, includ ...
s, known as 1, 2, 3 and 4 Squadron.
[Lee (2007), p. 95.] The first three 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.
Notable operations

* On December 13, 2003, Members of
Task Force 121
Task Force 121 was a United States Department of Defense special operations task force. TF121 was a multi-service force from Joint Special Operations Command, made up of operators from the U.S. Army's Delta Force, 75th Ranger Regiment, and ...
conducted a military operation in
Ad-Dawr,
Iraq which lead to the
capture
Capture may refer to:
*Asteroid capture, a phenomenon in which an asteroid enters a stable orbit around another body
*Capture, a software for lighting design, documentation and visualisation
*"Capture" a song by Simon Townshend
*Capture (band), an ...
of former Iraqi president
Saddam Hussein who was found hiding in a
spider hole.
* On May 2, 2011,
Osama Bin Laden
Osama bin Mohammed bin Awad bin Laden (10 March 1957 – 2 May 2011) was a Saudi-born extremist militant who founded al-Qaeda and served as its leader from 1988 until Killing of Osama bin Laden, his death in 2011. Ideologically a Pan-Islamism ...
was killed in a
CIA SAD
Sadness is an emotional pain associated with, or characterized by, feelings of disadvantage, loss, despair, grief, helplessness, disappointment and sorrow. An individual experiencing sadness may become quiet or lethargic, and withdraw them ...
-led operation where
U.S. Navy SEALs from
DEVGRU's Red Squadron were flown into
Abottabad,
Pakistan by elements of
160th SOAR
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 include ...
from
Jalalabad,
Afghanistan.
* On October 22, 2015, 30 U.S. special operations forces consisting of members of
Delta Force, aviators from the
160th SOAR
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 include ...
, paramilitary officers from the
CIA's
Special Activities Center
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 s ...
and along with members of the
Kurdish Counter-terrorism unit
Peshmerga, conducted a raid on an
ISIS prison compound north of the town of
Hawija
Hawija () is the central town of Al-Hawija District in the Kirkuk Province of Iraq, west of Kirkuk, and north of Baghdad. The town has a population of about 100,000 inhabitants.
Hawija District has approximately 150,000 inhabitants, mostly pop ...
in Iraq's
Kirkuk province which resulted in the liberation of approximately 70 hostages, including more than 20 members of the
Iraqi Security Forces who were to be executed and buried in freshly dug graves. The operation left 1 Delta operator dead,
MSG Joshua Wheeler
Joshua Lloyd Wheeler (November 22, 1975 – October 22, 2015) was a United States Army soldier who was killed in Iraq during Operation Inherent Resolve. He was a master sergeant assigned to the elite Delta Force, and was the first American servi ...
, the first American to be killed by ISIS insurgents and the first American to be
killed in Action in Iraq since November 2011.
SGM SGM, or sgm, may refer to:
Science
* Second Generation Multiplex DNA profiling system - also see SGM+
* Scanning gate microscopy
* Spherical Grating Monochromator beamline of Canadian Light Source
* Semi-global matching algorithm in stereo ima ...
Thomas Payne
Thomas Payne (c. 1718 – 1799) was an important bookseller and publisher in 18th-century London.
Life
Payne was born in Brackley, Northamptonshire. From 1750 he ran a shop at Mews Gate in Castle Street near Leicester Fields (the site is now ...
, then a
SFC was awarded the
Medal of Honor on September 11, 2020 for his actions that day.
* Between October 26 and 27, 2019 in
Barisha,
Idlib Governorate
Idlib Governorate ( ar, مُحافظة ادلب / ALA-LC: ''Muḥāfaẓat Idlib'') is one of the 14 governorates of Syria. It is situated in northwestern Syria, bordering Turkey's Hatay province to the north, Aleppo Governorate to the east, Hama ...
,
Syria
Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
. Members of
1st SFOD-D
The 1st Special Forces Operational Detachment–Delta (1st SFOD-D), referred to variously as Delta Force, Combat Applications Group (CAG), Army Compartmented Elements (ACE), "The Unit", or within Joint Special Operations Command (JSOC), Task Fo ...
(Delta Force) along with paramilitary officers from the
CIA's
Special Activities Center
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 s ...
, Army Rangers from the
75th Ranger Regiment
The 75th Ranger Regiment, also known as Army Rangers, is the U.S. Army's premier light infantry unit and special operations force within the United States Army Special Operations Command. The regiment is headquartered at Fort Benning, Georgi ...
and aviators from the
160th SOAR
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 include ...
conducted a raid that resulted in the
death of Abu Bakr al-Baghdadi. The raid was named Operation Kayla Mueller after American human rights activist and humanitarian aid worker
Kayla Mueller, who was captured in Syria, tortured, and eventually killed by
ISIL on February 6, 2015. Baghdadi killed himself when he detonated a suicide belt while seeking to evade the U.S. forces during the raid after reaching a dead end in a tunnel. Two Delta operators and one military working dog (
Conan) were injured from Baghdadi's suicide belt but sustained no life threatening injuries.
References
{{US Special Operations Forces
Special Operations Forces of the United States
Military terminology