Air force ground forces and special forces
Air force ground forces and special forces are the land warfare forces of an air force. They may include infantry, special forces, security forces, and military police. Airmen assigned to such units may be trained, armed and equipped for ground combat and special operations.

Rationale

Traditionally the primary rationale for air force ground forces is for force protection. Aircraft are most vulnerable when on the ground, to offensive counter air operations, and most cannot operate without fixed infrastructure, consumables, and trained personnel. An adversary may hope to achieve air supremacy or protect itself from air attack first by attacking airbases, aircraft and other assets on the ground. Such attacks can be made by, for example, aircraft, cruise missiles and short range ballistic missiles. However, an adversary at a numerical, technological or other disadvantage may choose to attempt to disrupt flight operations by aiming to overrun or raid enemy air bases as early as possible, using blitzkrieg like tactics, for example Operation Barbarossa, or through the use of special forces and unconventional attacks, such as the Taliban raid on Camp Bastion.

To protect against attacks against airbases, and from being overrun, some air forces have a force dispersal doctrine that sees aircraft dispersed to secondary and emergency air bases, such as highway strips, and, as was the case with the Royal Air Force's vertical take off Harriers, dispersals in forest clearings or the Bas 60 and Bas 90 systems of the Swedish Air Force. However, when dispersed in such a way, aircraft and personnel are even more vulnerable to ground attacks.

To defend against ground attacks, most air forces train certain airmen in basic weapons handling skills and tactics; some train units as infantry.

Other than base and asset defence roles, air force ground forces may have other roles such as Chemical, Biological, Radiological and Nuclear (CBRN) defence, training other air force personnel in weapon skills and basic ground defence tactics, traditional combat operations, as well as providing leadership to other airmen in base defence roles. In addition to protecting their home bases and dispersals, air force ground forces will also provide force protection when air expeditionary forces are deployed abroad and of airheads during air bridge operations, usually being some of the first air force personnel on the ground. Moving towards the special operations spectrum of operations, is assaulting, capturing and securing of airfields for use by one's own aircraft.

Not all air forces possess their own ground units and whether or not they do or is sometimes due to other factors such as political considerations and inter-service rivalry. Such units act as a force multiplier allowing the secure operation of forward airbases and thereby increasing the availability and responsiveness of aviation assets.

Special forces
Some air forces also possess special forces, who perform roles on land in support of air force operations. These include units and individual personnel who operate independently or, with other military units.

The chief missions in such units are combat search and rescue, including rescuing downed aircrews in hostile territory; long-range reconnaissance, direct action and forward air control in support of air to ground operations, for example illuminating targets for attack by laser-guided bombs.

Other common roles include military weather forecasting, pathfinding, domestic counter terrorism and hostage rescue missions; capturing airbases, establishing advanced airfields and conducting air traffic control.

Doctrine
In most forces a layered approach is used to deliver a defense in depth. Peacetime doctrine is to maintain the integrity of the perimeter through the use of watch posts and/or remote sensors, and if deemed necessary patrols within the perimeter. In the event of the perimeter being penetrated, heavily armed and mobile fast response units, often using armored vehicles, will attempt to intercept, identify and if necessary suppress the incursion. If attackers manage to gain entry into the working areas of the airbase, by subterfuge or other means, then the role of air force ground forces is to remove them using close quarter battle.

Wartime doctrine, in for example the RAF Regiment and USAF Security Forces, sees the addition of another layer through the use of aggressive patrolling outside the perimeter to deter, detect and destroy would be attackers. The area around the airbase is mapped and prearranged fire plans are put in place to allow patrols to call down rapid and accurate indirect fire from attached mortars and other crew served weapons.

History

World War I
The Royal Naval Air Service (RNAS), one of the two British air arms that was amalgamated to create the RAF, operated an armoured car wing that grew in size to some 20 squadrons. Using at first unarmoured vehicles to pick up downed aircrew and for line of communications security duties, it was the RNAS which created the Rolls-Royce armoured cars, which it also used to raid and harass the Germans, thus beginning the tradition of RAF armoured car operations. These were then disbanded in 1915 and the vehicles transferred to the British Army.

World War II

During World War II, Luftwaffe doctrine was to operate as a tactical air force in support of the army providing air defence and close air support against ground targets. Due to political considerations all German air defences were placed in the hands of the Luftwaffe, and Luftwaffe Flak units were attached to army units to provide ground-based air defence. In addition to self-protection and air defence roles, these Luftwaffe troops, of for example the Flak corps, were also called upon to use their Flak guns in fire support and anti-armour roles, and it was in the hands of Luftwaffe airmen that the German 88mm gun was first used against tanks.

Flying units were also expected to closely follow the advancing army and as such could be expected to encounter enemy combatants during counterattacks or who had not been cleared; because of this, all Luftwaffe personnel were trained to a higher level in infantry skills and tactics than was normal in other air forces of the time. Also because of political considerations German paratroopers, the Fallschirmjäger, were part of the air force. Later in the war with Germany facing a manpower shortage, rather than release its personnel to the German Army, Göring chose instead to create the Luftwaffe Field Divisions, using personnel surplus to the needs of flying operations; as cadre for these units, officers and non commissioned officers were transferred from the Flak and paratroop units.

One of the great successes of the German forces in World War II was the destruction of enemy air forces by over running them on the ground, and the use of airborne forces in advance and in support of ground operations. One of the vulnerabilities of this time was the loss of one's own airfields, which if captured would give the enemy the infrastructure needed to build an air-bridge, during the Battle of Crete the airfields were a key objective for the Germans, and their capture by paratroopers allowed their use by the gliders and transports of the main air landing force. The casualties in the Fallschirmjager were such that they were largely used as ground troops thereafter.

To guard against British airfields falling to German paratroops as Maleme had, Winston Churchill demanded that RAF airmen should be trained and equipped to defend themselves against ground attack. In a condemning memo to the Secretary of State for Air and to the Chief of the Air Staff dated June 29, 1941, Churchill stated he would no longer tolerate the shortcomings of the Royal Air Force (RAF), in which half a million RAF personnel had no combat role. He ordered that all airmen be armed and ready to "fight and die in defence of their airfields" and that "every airfield should be a stronghold of fighting air-ground men, and not the abode of uniformed civilians in the prime of life protected by detachments of soldiers". Amongst the measures implemented were improvised armoured cars, such as the Armadillo or Bison, and pillboxes, most notably the Pickett-Hamilton fort, which could be raised to block a runway. However, rather than training all airmen as infantry on the German model, the RAF created instead the RAF Regiment.

During the planning of the second front which became the invasion of Normandy, it was foreseen that as the allied armies advanced, aircraft operating from airfields in England would be decreasingly effective and that to maintain air cover allied fighter squadrons would need to accompany the advancing divisions. The RAF Commandos were created to service aircraft from newly built or captured airfields. However, they were fully commando trained and because of the forward nature of their operations, they were expected to help secure, make safe and defend from counterattack the airfields from which they operated.

Vietnam 

In the face of US air superiority, North Vietnam resorted to attacking the United States Air Force on the ground, with infiltrators striking from both within and outside the perimeter.  The United States Air Force Security Police defended against them.

First formed during World War II, the United States Air Force Security Police were dramatically reduced in scope following the war.  Post war the newly established United States Air Force (USAF) saw its primary role as a strategic one.  Its base defense doctrine thus was one of security policing.  United States involvement in Vietnam, however, brought a real and sustained threat of ground attack.  To meet these threats the Phu Cat Air Base Security Forces pioneered the Air Base Ground Defense doctrine that informs USAF practice to this day.

In a demarcation of combat roles the United States Army was primarily responsible for security outside of airbases, and the Republic of Vietnam Air Force for patrolling the internal perimeter.  However, rather than just rely upon static defense, the United States Air Force pioneered the use of remote detection equipment, such as seismic detectors and ground surveillance radar, to detect infiltrators.  Rifle squads responded, mounted in heavily armed Cadillac Gage Commando and M113 armored personnel carriers.

List of air force ground and special forces units

  Special Operations Group
  Airfield Defence Guards
  No. 4 Squadron RAAF
  No. 41 Squadron BAF
  Force Protection Squadron
  Air Force Infantry
  Para-SAR
  Agrupación Antisecuestros Aéreos
  Comandos de Aviación
  Infanteria de Aviación
  PLAAF Airborne Corps
  Agrupación de Comandos Especiales Aéreos
  Czech Air Force Security Squadrons
  Estonian Air Force Base Defense Operations Center
  Fusiliers Commandos de l'Air
  German Air Force Regiment
  Kampfretter
  31st Search and Rescue Operations Squadron (special force)
  Hellenic Air Force Police
  Garud Commando Force
  Bravo Detachment 90
  Kopagsgat Quick Reaction Corps
  Unit 669
  Unit 5101
  16º Stormo (Battaglione Fucilieri dell'Aria - Air Force Fusiliers Battalion)
  17º Stormo Incursori (17th Raiders Wing)
  Base Defense Development & Training Squadron
  RMAF Special Force
  Montenegrin Air Force Air Base Security Platoon
  RNZAF Security Forces
  Luchtvaarttroepen 
  Nigerian Air Force Regiment
  Royal Norwegian Air Force Base Defense Squadron
  Special Service Wing
  710th Special Operations Wing
  JW GROM
  JW Komandosów
  Polícia Aérea
  6th Search & Rescue Air Group
  Combat Control Team
  Escuadrón de Zapadores Paracaidistas (EZAPAC)
  Escuadrón de Apoyo al Despliegue Aéreo (EADA)
  Segundo Escuadrón de Apoyo al Despliegue Aéreo (SEADA)
  Sri Lanka Air Force Regiment
  Parachute Reconnaissance Company 17
  Swedish Air Force Rangers
  Swedish Air Force Force Protection (Flygbassäk)
  RTAF Security Force Regiment
  RTAF Special Operations Regiment
  Combat Search and Rescue (Turkish Armed Forces)
  RAF Regiment
  Ukrainian Air Force Rifle Infantry Brigade (Consolidated)
  United States Air Force Security Forces
  United States Air Force Air Support Operations Squadrons
  United States Air Force Rescue Squadrons
  United States Air Force Special Tactics Squadrons
  United States Air Force Special Reconnaissance
  Venezuelan Air Force Infantry (Infanteria Aeronautica de la Aviacion Militar)
  Venezuelan Air Force Commandos (Grupos de Operaciones Especiales Aeroes)

Historic
 Fallschirmjäger
 1st Fallschirm-Panzer Division Hermann Göring
 Luftwaffe Field Divisions
 Royal Air Force Commandos
 :it: Arditi distruttori della Regia Aeronautica (Destroyer Commando Royal Air Force)
 Caçadores Paraquedistas
 Air Force Air Defense Artillery and Security Guards Command
 Unit 684

See also
 List of military special forces units
 List of paratrooper forces
 Marines

References

External links
 The Air Force’s New Ground War 
 Current air base ground defense doctrine:are we postured to meet the expectations of AEF

Air force ground defence units and formations
Infantry units and formations
Special