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The Naval Special Warfare Development Group (NSWDG), abbreviated as DEVGRU ("Development Group") and commonly known as SEAL Team Six, is the
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
component of the
Joint Special Operations Command 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 equi ...
(JSOC). The unit is often referred to within JSOC as Task Force Blue. DEVGRU is administratively supported by Naval Special Warfare Command and operationally commanded by JSOC. Most information concerning DEVGRU is designated as classified, and details of its activities are not usually commented on by either the
United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national sec ...
or the
White House The White House is the official residence and workplace of the president of the United States. It is located at 1600 Pennsylvania Avenue NW in Washington, D.C., and has been the residence of every U.S. president since John Adams in ...
. Despite the official name changes, "SEAL Team Six" remains the unit's widely recognized moniker. DEVGRU and its
Army An army (from Old French ''armee'', itself derived from the Latin verb ''armāre'', meaning "to arm", and related to the Latin noun ''arma'', meaning "arms" or "weapons"), ground force or land force is a fighting force that fights primarily on ...
and
Air Force An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an ...
counterparts,
Delta Force 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 ...
and
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 Fi ...
, are the U.S. military's primary Tier 1
special mission unit 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 ...
s tasked with performing the most complex, classified, and dangerous missions directed by, until 2002, the National Command Authority, and since then, directly from the President or the Secretary of Defense. DEVGRU conducts various specialized missions such as counterterrorism,
hostage A hostage is a person seized by an abductor in order to compel another party, one which places a high value on the liberty, well-being and safety of the person seized, such as a relative, employer, law enforcement or government to act, or refr ...
rescue, special reconnaissance, and direct action (short-duration strikes or small-scale offensive actions), often against high-value targets.


History

The origins of DEVGRU are in SEAL Team Six, a unit created in the aftermath of Operation Eagle Claw. During the
Iran hostage crisis On November 4, 1979, 52 United States diplomats and citizens were held hostage after a group of militarized Iranian college students belonging to the Muslim Student Followers of the Imam's Line, who supported the Iranian Revolution, took over ...
in 1979,
Richard Marcinko Richard Marcinko (November 21, 1940 – December 25, 2021) was a U.S. Navy SEAL commander and Vietnam War veteran. He was the first commanding officer of SEAL Team Six. After retiring from the United States Navy, he became an author, radio talk ...
was one of two U.S. Navy representatives for a Joint Chiefs of Staff task force known as the TAT (Terrorist Action Team). The purpose of the TAT was to develop a plan to free the American hostages held in Iran. In the wake of the disaster at the Desert One base in Iran, the Navy saw the need for a full-time counter-terrorist unit and tasked Marcinko with its design and development. Marcinko was the first commanding officer of this new unit. At the time, there were two SEAL Teams, SEAL Team ONE and SEAL Team TWO. Marcinko named the unit SEAL Team Six in order to confuse
Soviet intelligence This is a list of historical secret police organizations. In most cases they are no longer current because the regime that ran them was overthrown or changed, or they changed their names. Few still exist under the same name as legitimate police fo ...
as to the number of actual SEAL teams in existence. The unit's
plankowner A plankowner"U.S. Navy Style Guide", Navy.mil website (also referred to a plank ownerCutler and Cutler, p 167 and sometimes a plank holder) is an individual who was a member of the crew of a United States Navy ship or United States Coast Guard Cu ...
s (founding members) were interviewed and hand-picked by Marcinko from throughout the UDT/SEAL community. SEAL Team Six was formally commissioned in November 1980, and an intense, progressive work-up training program made the unit mission-ready six months later. SEAL Team Six became the U.S. Navy's premier hostage rescue and counter-terrorism unit. It has been compared to the U.S. Army's elite
Delta Force 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 ...
. Marcinko held the command of SEAL Team Six for three years, from 1980 to July 1983, instead of the typical two-year command in the Navy at the time. SEAL Team Six started with 75 shooters. The unit has virtually unlimited resources at its disposal. In 1984, Marcinko and a dozen members of SEAL Team Six would go on to form "
Red Cell Red Teams or Red Cells are United States government terms for the National Security Co-ordination Team (NSCT). These teams or units are designed to test the effectiveness of American tactics or personnel. In 1984, Red Cell was formed after Rich ...
" (also known as OP-06D), a special unit designed to test the security of American military installations. In 1987, SEAL Team Six was dissolved. A new unit named the "Naval Special Warfare Development Group" was formed, essentially as SEAL Team Six's successor. Reasons for the disbanding are varied, but the name ''SEAL Team Six'' is often used in reference to DEVGRU.


Controversies

In 2010, during the attempted rescue of British aid worker Linda Norgrove from
Taliban The Taliban (; ps, طالبان, ṭālibān, lit=students or 'seekers'), which also refers to itself by its state name, the Islamic Emirate of Afghanistan, is a Deobandi Islamic fundamentalist, militant Islamist, jihadist, and Pasht ...
kidnappers in
Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordere ...
, she died as a result of injuries sustained from a SEAL's errant hand grenade. In 2017, Army Special Forces Staff Sergeant Logan Melgar died from trauma received during an apparent on-base hazing incident in
Mali Mali (; ), officially the Republic of Mali,, , ff, 𞤈𞤫𞤲𞥆𞤣𞤢𞥄𞤲𞤣𞤭 𞤃𞤢𞥄𞤤𞤭, Renndaandi Maali, italics=no, ar, جمهورية مالي, Jumhūriyyāt Mālī is a landlocked country in West Africa. Mal ...
that resulted in the criminal prosecutions of two DEVGRU members and two Marine Raiders. Following a two year investigation by '' The Intercept'', a report was released in 2017, accusing SEAL Team Six and its commanding officers of abuses, crimes and coverups. The investigation included interviews with numerous members and officers of the unit, who recounted the group's involvement in abuses, including what some members described as war crimes. Former unit members and officers said that commanding officers tolerated and covered up abuses.


Recruitment, selection and training

In the early stages of creating SEAL Team Six, Marcinko was given a six-month window to produce the team. Had he failed to do so, the project would have been canceled. Consequentially, Marcinko had little time to create a proper selection course on par with Delta Force's process. To get around this, recruits were selected after assessing their Navy records, followed by individual interviews. According to Marcinko's book ''Rogue Warrior'', SEAL Team Six members were chosen if they had initial struggles qualifying in aspects of training, but subsequently qualified, as the determination of these candidates was seen as more valuable than a candidate that breezed through his training. Originally, applicants came only from the east coast and west coast SEAL teams and the Underwater Demolition Teams. Although much of the training and recruitment is classified, there are some requirements and training exercises that are now public knowledge. The requirements to apply for DEVGRU states that applicants must be male, be 21 years old or older, have served at least 2 deployments on their previous assignments, and be eligible for Secret clearance. Candidates come from the East/West Coast SEAL teams, SEAL Delivery Vehicle (SDV) teams, the Special Boat teams (for Gray Squadron), the Navy
explosive ordnance disposal Bomb disposal is an explosives engineering profession using the process by which hazardous explosive devices are rendered safe. ''Bomb disposal'' is an all-encompassing term to describe the separate, but interrelated functions in the milit ...
(EOD) teams, and Navy SARCs. Enlisted candidates must be in the pay grades of E-4 through E-8 and Officer candidates need to be O-3 through O-4 to apply. Candidates must undergo physical screening, psychological testing and are then interviewed to deem whether they are suitable for assignment to NSWDG. Those who pass the stringent recruitment process will attend an eight-month selection and training course with the unit's training department known as "Green Team". The training course attrition rate is high, usually around 50%; during one selection course, out of the original 20 candidates, 12 completed the course. All candidates are watched closely by DEVGRU instructors and evaluated on whether they are suitable to join the individual squadrons. Howard E. Wasdin, a former member of SEAL Team Six said in a 2011 interview that 16 applied for SEAL Team Six selection course and two were accepted. Those who do not pass the selection phase are returned to their previous assignments and are able to try again in the future. Like all special operations forces units that have an extremely intensive and high-risk training schedule, there can be serious injuries and deaths. SEAL Team Six/DEVGRU has lost several operators during training, including parachute accidents and
close-quarters battle Close combat means a violent physical confrontation between two or more opponents at short range.''MCRP 3-02B: Close Combat'', Washington, D.C.: Department Of The Navy, Headquarters United States Marine Corps, 12 February 1999Matthews, Phil, CQB ...
training accidents. It is presumed that the unit's assessment process for potential new recruits is different from what a SEAL operator experienced in his previous career, and much of the training tests the candidate's mental capacity rather than his physical condition. Every candidate chosen will have already completed their respective advanced training pipelines; Basic Underwater Demolitions/SEAL training, the Special Warfare Combatant-Craft Crewman training,
Special Amphibious Reconnaissance Corpsman A Special Amphibious Reconnaissance Corpsman (SARC) is a United States Navy hospital corpsman who provides MARSOC and other USSOCOM units advanced trauma management associated with combatant diving and parachute entry. Traditionally, they are a ...
training, the
Navy EOD United States Navy Explosive Ordnance Disposal technicians render safe all types of ordnance, including improvised, chemical, biological, and nuclear. They perform land and underwater location, identification, render-safe, and recovery (or dispo ...
training or Navy Dive School. Candidates are put through a variety of advanced training courses led by civilian or military instructors. These can include free climbing, land warfare, advanced unarmed combat techniques, defensive and offensive advanced driving, advanced diving, communications and Survival, Evasion, Resistance and Escape training. Candidates are also taught how to pick locks on cars, doors, and safes. All candidates must perform at the top level during selection, and the unit instructors evaluate the candidate during the training process. Selected candidates are assigned to one of the Tactical Development and Evaluation Squadrons. Unlike regular SEAL Teams, SEAL Team Six operators can attend almost any other military course to receive further training depending on the unit's requirements. Like Delta Force, live-fire marksmanship drills in both long-range and close-quarter battle drills are done with hostage roles being played by other students to help build the candidates' trust between each other. DEVGRU regularly trains and operates with special forces units from other countries such as the British Special Air Service and
Special Boat Service The Special Boat Service (SBS) is the special forces unit of the United Kingdom's Royal Navy. The SBS can trace its origins back to the Second World War when the Army Special Boat Section was formed in 1940. After the Second World War, the Roya ...
, Australia’s
Special Air Service Regiment The Special Air Service Regiment, officially abbreviated SASR though commonly known as the SAS, is a special forces unit of the Australian Army. Formed in 1957, it was modelled on the British SAS sharing the motto, "Who Dares Wins". The re ...
and
2nd Commando Regiment The 2nd Commando Regiment is a special forces unit of the Australian Army and is part of Special Operations Command. The regiment was established on 19 June 2009 when the 4th Battalion RAR (Commando) was renamed. It is based at Holsworthy, ...
, Israel’s Shayetet 13 and Canada’s
Joint Task Force 2 Joint Task Force 2 (JTF 2; french: links=no, Deuxième Force opérationnelle interarmées, FOI 2) is an elite special operations force of the Canadian Armed Forces, serving under the Canadian Special Operations Forces Command. JTF 2 is known to wo ...
.


Structure

DEVGRU is divided into color-coded line squadrons: * Red Squadron (Assault) * Blue Squadron (Assault) * Gold Squadron (Assault) * Silver Squadron (Assault) * Black Squadron (Intelligence, Reconnaissance, & Surveillance) * Gray Squadron (Mobility Teams, Transportation/Divers, QRF) * Green Team (Selection/Training) Each assault squadron, usually led by a Commander (O-5), is divided into three troops of enlisted SEALs, often called assaulters. Each of these troops is commanded by a senior commissioned officer, which is usually a
Lieutenant Commander Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding ran ...
(O-4). A troop chief also serves as an adviser to the troop commander and is the highest-enlisted SEAL in the troop, usually a Master Chief Petty Officer (E-9). A DEVGRU troop is further divided into smaller teams of SEALs. Each troop has around 16 members and is led by a senior commissioned officer, as well as a troop chief. These individual teams of assaulters are led by senior enlisted SEALs; usually a Senior Chief Petty Officer (E-8), sometimes a
Chief Petty Officer A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards. Canada "Chief petty officer" refers to two ranks in the Royal Canadian Navy. A chief petty officer 2nd class (CPO2) (''premier maître de deuxi ...
(E-7). The rest of these teams are filled out with more Chief Petty Officers (E-7), Petty Officers First Class (E-6), and Petty Officers Second Class (E-5); each member with a respective role. Each assault squadron also has a specific nickname. Examples include Gold Squadron's Crusaders, Red Squadron's Indians, Blue Squadron's Pirates, Silver Squadron's Headhunters, and Gray Squadron's Vikings. The assault squadrons are supported by a variety of support personnel, including cryptologists, communicators, EOD technicians, dog handlers, and sometimes airmen from the
United States Air Force The United States Air Force (USAF) is the Aerial warfare, air military branch, service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part ...
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 Fi ...
, the Air Force's JSOC element. According to the Government Accountability Office report on special operations forces, in the fiscal year of 2014, DEVGRU had a total of 1,787 authorized positions, of which 1,342 are military and 445 are civilian.


Firearms

The following is a list of firearms known to be used by DEVGRU, but because of the unit's secretive nature, this list is not exhaustive. ;Carbines * Noveske 10.5" NSR 5.56×45mm *
Heckler & Koch HK416 The Heckler & Koch HK416 is a gas-operated assault rifle chambered for the 5.56×45mm NATO cartridge. It is designed and manufactured by the German company Heckler & Koch. Although the design is based on the AR-15 class of firearm (specifical ...
5.56×45mm (previously favored rifle among operators and usually modified, both significantly and varied to personal preference, with
SOPMOD The Special Operations Peculiar MODification (SOPMOD) kit is an accessory system for the M4A1 carbine, CQBR, FN SCAR Mk 16/17, HK416 and other weapons used by United States Special Operations Command (USSOCOM), though it is not specific to SO ...
accessories such as suppressors, stocks, optics, lasers, lights and grips) * Heckler & Koch MP7 4.6×30mm * Colt Mk 18 CQBR 5.56×45mm *
M4A1 The M4 carbine (officially Carbine, Caliber 5.56 mm, M4) is a 5.56×45mm NATO, gas-operated, magazine-fed carbine developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle. The M4 is extensively ...
(various manufacturers) 5.56×45mm (not as commonly used, but still in inventory. Also customized with SOPMOD items) ;Sniper and anti-materiel rifles * Colt Mk 12 SPR 5.56×45mm * Knight's Armament Company SR-25 7.62×51mm *
Remington Model 700 The Remington Model 700 is a series of bolt-action centerfire rifles manufactured by Remington Arms since 1962. It is a development of the Remington 721 and 722 series of rifles, which were introduced in 1948. The M24 and M40 military sniper ...
"Mk 13 Mod. 5"
.300 Winchester Magnum The .300 Winchester Magnum (also known as .300 Win Mag or .300 WM) (7.62×67mmB, 7.62x66BR) is a belted, bottlenecked magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a m ...
* McMillan Firearms TAC-338
.338 Lapua The .338 Lapua Magnum (8.6×70 mm or 8.58×70 mm) is a rimless, bottlenecked, centerfire rifle cartridge. It was developed during the 1980s as a high-powered, long-range cartridge for military snipers. It was used in the War in Afghanistan an ...
*
McMillan TAC-50 The McMillan TAC-50 is a long-range anti-materiel rifle. The TAC-50 is based on previous designs from the same company, which first appeared during the late 1980s. As of 2017 it holds the record for the longest confirmed sniper kill. McMillan mak ...
"Mk 15 Mod. 0 .50 BMG * Barrett M107A1 .50 BMG ;Sidearms * Heckler & Koch HK45 "Mk 24 Mod. 0"
.45 ACP The .45 ACP ( Automatic Colt Pistol) or .45 Auto (11.43×23mm) is a rimless straight-walled handgun cartridge designed by John Moses Browning in 1904, for use in his prototype Colt semi-automatic pistol. After successful military trials, it ...
*
SIG Sauer P226 Sig used as a name may refer to: *Sig (given name) *Sig, Algeria, a city on the banks of the Sig River *Sig Alert, an alert for traffic congestion in California, named after Loyd Sigmon *Sig River, a river of Algeria also known as Mekerra sig (lo ...
"P226R Mk 25" 9×19mm *
Glock 19 Glock is a brand of polymer- framed, short recoil-operated, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H. The firearm entered Austrian military and police service by 1982 after it was th ...
9×19mm *
SIG Sauer P320 The SIG Sauer P320 is a modular semi-automatic pistol made by SIG Sauer, Inc., SIG Sauer's American branch. It is a further development of the SIG Sauer P250, utilizing a striker-fired mechanism in lieu of a double action only hammer system. Th ...
9×19mm


Commanding Officers

Command of DEVGRU became a Captain's billet, following Marcinko's departure.


Roles and responsibilities

DEVGRU's full mission is classified but is thought to include pre-emptive, pro-active counter-terrorist operations,
counter-proliferation Counterproliferation refers to diplomatic, intelligence, and military efforts to combat the proliferation of weapons, including both weapons of mass destruction (WMD), long-range missiles, and certain conventional weapons. Nonproliferation and ar ...
(efforts to prevent the spread of both conventional weapons and weapons of mass destruction), as well as the elimination or recovery of high-value targets from unfriendly nations. DEVGRU is one of a handful of U.S. Special Mission Units authorized in the use of pre-emptive actions against terrorists and their facilities. When SEAL Team Six was first created in 1980, it was devoted exclusively to counter-terrorism with a worldwide maritime responsibility; its objectives typically included targets such as ships, oil rigs, naval bases, coastal embassies, and other civilian or military bases that were accessible from the sea or inland waterways. On certain operations, small teams from SEAL Team Six were tasked with covertly infiltrating international high-risk areas to carry out reconnaissance or security assessments of U.S. military facilities and embassies to give advice on improvements in order to prevent casualties in an event of a terrorist attack. SEAL Team Six was disbanded in 1987, and its role, minus non-counter-terrorism ship-boarding, which was given to the newly formed SEAL Team 8, given to the newly formed DEVGRU. Since the start of war on terror, DEVGRU has evolved into a multi-functional special operations unit with a worldwide operational mandate. Such operations include the successful rescue of Jessica Buchanan and Poul Hagen Thisted, the attempted rescue of
Linda Norgrove Linda may refer to: As a name * Linda (given name), a female given name (including a list of people and fictional characters so named) * Linda (singer) (born 1977), stage name of Svetlana Geiman, a Russian singer * Anita Linda (born Alice Lake ...
, the successful rescue of American doctor Dilip JosephQadir Sediq
"U.S. Navy SEAL killed in operation to rescue American doctor in Afghanistan"
CNN CNN (Cable News Network) is a multinational cable news channel headquartered in Atlanta, Georgia, U.S. Founded in 1980 by American media proprietor Ted Turner and Reese Schonfeld as a 24-hour cable news channel, and presently owned by ...
. 10 December 2012
and in 1991, the successful recovery of Haitian President Jean-Bertrand Aristide and his family during a coup that deposed him. The official mission of the currently operating Naval Special Warfare Development Group mission is "to provide centralized management for the test, evaluation, and development of equipment technology and Techniques, Tactics and Procedures for Naval Special Warfare". DEVGRU and the Army's Delta Force train and deploy together on counter-terrorist missions usually as part of a joint special operations task force (JSOTF). The
Central Intelligence Agency The Central Intelligence Agency (CIA ), known informally as the Agency and historically as the Company, is a civilian foreign intelligence service of the federal government of the United States, officially tasked with gathering, processing, ...
's highly secretive Special Activities Center and more specifically its elite Special Operations Group often works with, and recruits from, DEVGRU. The combination of these units led ultimately to the killing of Al-Qaeda leader Osama bin Laden in
Operation Neptune Spear On May 2, 2011, Osama bin Laden, the founder and first leader of the Islamist militant group al-Qaeda, was shot several times and killed at his compound in the Pakistani city of Abbottabad, by United States Navy SEALs of the U.S. Naval Spe ...
.


See also

* Sister JSOC units; ** 1st Special Forces Operational Detachment – Delta **
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 Fi ...
**
Intelligence Support Activity 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 Mi ...
*Additional SEAL articles; *
List of Navy SEALs This list of United States Navy SEALs includes both current and former notable members of the Naval Special Warfare teams, known as "SEALs" for "SEa", "Air" and "Land", the full spectrum of environments in which they operate. List * Matthew ...
* Other national maritime-based units **
GRUMEC The Combat Divers Groupment ( pt, Grupamento de Mergulhadores de Combate), abbreviated to GRUMEC, is a special operations and Counterterrorism unit of the Brazilian Navy. The GRUMEC was created in 1974 and is subordinate to the Submarine Force, ...
(Brazil) **
Frømandskorpset The Frogman Corps ( da, Frømandskorpset) is the maritime special operations force of the Danish Defence part of Special Operations Command. On 1 July 2015, the Frogman Corps transferred from the Royal Danish Navy to the newly established Spec ...
(Denmark) ** Commandos Marine (France) ** Kampfschwimmer (Germany) **
MARCOS Marcos may refer to: People with the given name ''Marcos'' *Marcos (given name) Sports ;Surnamed * Dayton Marcos, Negro league baseball team from Dayton, Ohio (early twentieth-century) * Dimitris Markos, Greek footballer * Nélson Marcos, Portug ...
(India) ** Shayetet 13 (Israel) ** COMSUBIN (Italy) ** MARSOF (Netherlands) ** JW Formoza (Poland) ** Special Actions Detachment (Portugal) ** Naval Special Warfare Force (Spain) **
Special Boat Service The Special Boat Service (SBS) is the special forces unit of the United Kingdom's Royal Navy. The SBS can trace its origins back to the Second World War when the Army Special Boat Section was formed in 1940. After the Second World War, the Roya ...
(UK)


Notes


References


Further reading

* * * {{Authority control United States Joint Special Operations Command