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133-475: The United States Air Force opened the "CX-X Program" in 1964, intending to produce a next-generation strategic airlifter . Of the several airframe and engine proposals returned for consideration, Lockheed's aircraft and General Electric's engine were selected for the new design in 1965. The high-bypass turbofan was a huge leap in engine performance, offering a thrust of 43,000 pounds, while improving fuel efficiency by about 25%. The TF39 had an 8:1 bypass ratio,

266-760: A "systemic problem" in the USAF's management of the nuclear mission. Air support In military tactics , close air support ( CAS ) is defined as aerial warfare actions—often air-to-ground actions such as strafes or airstrikes —by military aircraft against hostile targets in close proximity to friendly forces. A form of fire support , CAS requires detailed integration of each air mission with fire and movement of all forces involved. CAS may be conducted using aerial bombs , glide bombs , missiles , rockets , autocannons , machine guns , and even directed-energy weapons such as lasers . The requirement for detailed integration because of proximity, fires or movement

399-562: A $ 179.7 billion budget and is the second largest service branch of the U.S. Armed Forces, with 321,848 active duty airmen , 147,879 civilian personnel, 68,927 reserve airmen, 105,104 Air National Guard airmen, and approximately 65,000 Civil Air Patrol auxiliarists . According to the National Security Act of 1947 (61 Stat . 502), which created the USAF: Section 9062 of Title 10 US Code defines

532-464: A 25:1 compressor pressure ratio, and a 2,500 °F (1,370 °C) turbine temperature made possible by advanced forced-air cooling. The first engine went for testing in 1965. Between 1968 and 1971, 463 TF39-1 and -1A engines were produced and delivered to power the C-5A fleet. The TF39 was a revolutionary 1960s engine rated from 41,000 to 43,000 lb f (191 to 205 kN ) of thrust. It introduced use of

665-616: A 62.5-inch-diameter lift-fan driven by a gas generator (J85). The bpr in VTOL operation was 12.3. This tip-turbine driven lift-fan concept was turned 90 degrees and developed as an 80-inch-diameter "cruise fan" demonstrator, driven by a J79 gas generator. For the CX-X program GE demonstrated a half-scale engine, the GE1/6, with 15,830 lb thrust and an sfc of 0.336. This was developed into the TF39 with

798-636: A 97 in diameter fan. Data from Related development Comparable engines Related lists United States Air Force The United States Air Force ( USAF ) is the air 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 of the United States Army Signal Corps ,

931-483: A Forward Air Support Link at each brigade to forward air support requests. When trained tentacle teams arrived in 1942, they cut response time on support requests to thirty minutes. It was also in the North Africa desert that the cab rank strategy was developed. It used a series of three aircraft, each in turn directed by the pertinent ground control by radio. One aircraft would be attacking, another in flight to

1064-426: A broader dimension of time or space than do tactics; they provide the means by which tactical successes are exploited to achieve strategic and operational objectives. Tactical Level Command and Control is where individual battles and engagements are fought. The tactical level of war deals with how forces are employed, and the specifics of how engagements are conducted and targets attacked. The goal of tactical level C2

1197-438: A cleanup plan for drinking water around Tucson, Arizona after the region's groundwater was contaminated by PFAS runoff from nearby Air Force bases. The United States Air Force has been involved in many wars, conflicts and operations using military air operations. The USAF possesses the lineage and heritage of its predecessor organizations, which played a pivotal role in U.S. military operations since 1907: In addition since

1330-458: A commander in planning, directing, coordinating, and controlling forces and operations in the accomplishment of the mission" (JP 1-02). This core function includes all of the C2-related capabilities and activities associated with air, cyberspace, nuclear, and agile combat support operations to achieve strategic, operational, and tactical objectives. At the strategic level command and control,

1463-440: A concern – pilots did not know recognition signals and regularly bombed friendly units, until an A-36 was shot down in self-defense by Allied tanks. The expectation of losses to friendly fire from the ground during the planned invasion of France prompted the black and white invasion stripes painted on all Allied aircraft from 1944. In 1944, USAAF commander Lt. Gen. Henry ("Hap") Arnold acquired 2 groups of A-24 dive bombers,

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1596-443: A critical importance in places where the infantry had got pinned down. At this time, British doctrine came to recognize two forms of air support; trench strafing (the modern-day doctrine of CAS), and ground strafing (the modern-day doctrine of air interdiction ) – attacking tactical ground targets away from the land battle. As well as strafing with machine-guns, planes engaged in such operations were commonly modified with bomb racks;

1729-706: A declining supply of aircraft and fuel, crippled their ability to provide effective CAS on the western front after 1943. The Royal Air Force (RAF) entered the war woefully unprepared to provide CAS. In 1940 during the Battle of France , the Royal Air Force and Army headquarters in France were located at separate positions, resulting in unreliable communications. After the RAF was withdrawn in May, Army officers had to telephone

1862-894: A force multiplier. It allows air assets to more rapidly reach any trouble spot around the world with less dependence on forward staging bases or overflight/landing clearances. Air refueling significantly expands the options available to a commander by increasing the range, payload, persistence, and flexibility of receiver aircraft. Aeromedical evacuation is "the movement of patients under medical supervision to and between medical treatment facilities by air transportation" (JP 1-02). JP 4-02, Health Service Support, further defines it as "the fixed wing movement of regulated casualties to and between medical treatment facilities, using organic and/or contracted mobility airframes, with aircrew trained explicitly for this mission." Aeromedical evacuation forces can operate as far forward as fixed-wing aircraft are able to conduct airland operations. Global precision attack

1995-768: A further and lower convergence point than aerial combat did. Of the Allied powers that fought in the Second World War, the Soviet Union used specifically designed ground attack aircraft more than the UK and US. Such aircraft included the Ilyushin Il-2 , the single most produced military aircraft at any point in world history. The Soviet military also frequently deployed the Polikarpov Po-2 biplane as

2128-452: A greater psychological effect on friendly and hostile forces alike. Moreover, unlike massive, indiscriminate artillery strikes, small aerial bombs would not render ground untrafficable, slowing attacking friendly forces. Although the prevailing view in official circles was largely indifferent to CAS during the interwar period, its importance was expounded upon by military theorists, such as J. F. C. Fuller and Basil Liddell Hart . Hart, who

2261-484: A high tempo of exploitation even when they outran their artillery assets. He also used a modified antiaircraft radar to track friendly attack aircraft to redirect them as necessary, and experimented with assigning fighter pilots to tours as forward air controllers to familiarize them with the ground perspective. In July 1944, Quesada provided VHF aircraft radios to tank crews in Normandy. When the armored units broke out of

2394-471: A key factor in the rapid advance and success of his Third Army. The American Navy and Marine Corps used CAS in conjunction with or as a substitute for the lack of available artillery or naval gunfire in the Pacific theater . Navy and Marine F6F Hellcats and F4U Corsairs used a variety of ordnance such as conventional bombs, rockets and napalm to dislodge or attack Japanese troops using cave complexes in

2527-545: A large by-pass ratio which, together with advances in core technology, contributed to a significant improvement in fuel efficiency over engines available at the time. The engine included features developed from previous GE engines: The high-bypass ratio of 8:1 for the TF-39 had its origins in the lift-fan technology demonstrated by GE in the XV-5 Vertifan aircraft. This aircraft had two X353-5 engines, each consisting of

2660-523: A nation state, or non-state/transnational actor. The Air Force maintains and presents credible deterrent capabilities through successful visible demonstrations and exercises that assure allies, dissuade proliferation, deter potential adversaries from actions that threaten US national security or the populations, and deploy military forces of the US, its allies, and friends. Nuclear strike is the ability of nuclear forces to rapidly and accurately strike targets which

2793-405: A precondition" (Annex 3–70, Strategic Attack). Air Interdiction is defined as "air operations conducted to divert, disrupt, delay, or destroy the enemy's military potential before it can be brought to bear effectively against friendly forces, or to otherwise achieve JFC objectives. Air Interdiction is conducted at such distance from friendly forces that detailed integration of each air mission with

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2926-494: A rapid cessation of hostilities. Post-conflict, regeneration of a credible nuclear deterrent capability will deter further aggression. The Air Force may present a credible force posture in either the Continental United States , within a theater of operations, or both to effectively deter the range of potential adversaries envisioned in the 21st century. This requires the ability to engage targets globally using

3059-467: A role previously dominated by FACs on the ground, and the use of B-52s for CAS . U.S. Marine Corps Aviation was much more prepared for the application of CAS in the Vietnam War, due to CAS being its central mission. In fact, as late as 1998, Marines were still claiming in their training manuals that "Close air support (CAS) is a Marine Corps innovation." One of the main debates taking place within

3192-767: A sharp reduction in flight hours for crew training since 2005 and the Deputy Chief of Staff for Manpower and Personnel directing Airmen's Time Assessments. On 5 June 2008, Secretary of Defense Robert Gates accepted the resignations of both the Secretary of the Air Force , Michael Wynne , and the Chief of Staff of the Air Force , General T. Michael Moseley . In his decision to fire both men Gates cited "systemic issues associated with... declining Air Force nuclear mission focus and performance". Left unmentioned by Gates

3325-452: A strong focus on the improvement of Basic Military Training (BMT) for enlisted personnel. While the intense training has become longer, it also has shifted to include a deployment phase. This deployment phase, now called the BEAST, places the trainees in a simulated combat environment that they may experience once they deploy. While the trainees do tackle the massive obstacle courses along with

3458-510: A variety of methods; therefore, the Air Force should possess the ability to induct, train, assign, educate and exercise individuals and units to rapidly and effectively execute missions that support US NDO objectives. Finally, the Air Force regularly exercises and evaluates all aspects of nuclear operations to ensure high levels of performance. Nuclear surety ensures the safety, security and effectiveness of nuclear operations. Because of their political and military importance, destructive power, and

3591-459: Is "the acquisition of information and the provision of this information to processing elements" (JP 2-01). It provides the ability to obtain required information to satisfy intelligence needs (via use of sources and methods in all domains). Collection activities span the Range of Military Operations (ROMO). Processing and exploitation is "the conversion of collected information into forms suitable to

3724-417: Is "the employment of limited offensive action and counterattacks to deny a contested area or position to the enemy" (JP 1-02). It includes both ballistic missile defense and airborne threat defense and encompasses point defense, area defense, and high-value airborne asset defense. Passive defense is "measures taken to reduce the probability of and to minimize the effects of damage caused by hostile action without

3857-580: Is a military service branch organized within the Department of the Air Force , one of the three military departments of the Department of Defense . The Air Force through the Department of the Air Force is headed by the civilian Secretary of the Air Force , who reports to the Secretary of Defense and is appointed by the President with Senate confirmation . The highest-ranking military officer in

3990-540: Is a well known example of a dive bomber built for precision bombing but which was successfully used for CAS. It was fitted with wind-blown sirens on its landing gear to enhance its psychological effect. Some variants of the Stuka were equipped with a pair of 37 mm (1.5 in) Bordkanone BK 3,7 cannons mounted in under-wing gun pods, each loaded with two six-round magazines of armour-piercing tungsten carbide -cored ammunition, for anti-tank operations. Other than

4123-425: Is defined as "all the defensive measures designed to detect, identify, intercept, and destroy or negate enemy forces attempting to penetrate or attack through friendly airspace" (JP 1-02). In concert with OCA operations, a major goal of DCA operations is to provide an area from which forces can operate, secure from air and missile threats. The DCA mission comprises both active and passive defense measures. Active defense

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4256-534: Is defined as "offensive operations to destroy, disrupt, or neutralize enemy aircraft, missiles, launch platforms, and their supporting structures and systems both before and after launch, but as close to their source as possible" (JP 1-02). OCA is the preferred method of countering air and missile threats since it attempts to defeat the enemy closer to its source and typically enjoys the initiative. OCA comprises attack operations, sweep, escort, and suppression/destruction of enemy air defense. Defensive Counter-Air (DCA)

4389-486: Is the ability to hold at risk or strike rapidly and persistently, with a wide range of munitions, any target and to create swift, decisive, and precise effects across multiple domains. Strategic attack is defined as "offensive action specifically selected to achieve national strategic objectives. These attacks seek to weaken the adversary's ability or will to engage in conflict, and may achieve strategic objectives without necessarily having to achieve operational objectives as

4522-583: Is the cornerstone of the credibility of the NDO mission. Positive nuclear command, control, communications; effective nuclear weapons security; and robust combat support are essential to the overall NDO function. Command and control is "the exercise of authority and direction by a properly designated commander over assigned and attached forces in the accomplishment of the mission. Command and control functions are performed through an arrangement of personnel, equipment, communications, facilities, and procedures employed by

4655-622: Is the determining factor. CAS may need to be conducted during shaping operations with special forces if the mission requires detailed integration with the fire and movement of those forces. A closely related subset of air interdiction , battlefield air interdiction , denotes interdiction against units with near-term effects on friendly units, but which does not require integration with friendly troop movements. CAS requires excellent coordination with ground forces, typically handled by specialists such as artillery observers , joint terminal attack controllers , and forward air controllers . World War I

4788-684: Is to achieve commander's intent and desired effects by gaining and keeping offensive initiative. The origins of the United States Air Force can be traced back to the Union Army Balloon Corps of the American Civil War . The Union Balloon Corps, established by aeronaut Thaddeus S. C. Lowe , provided aerial reconnaissance for the Union Army . This early use of balloons for military purposes marked

4921-634: The AN/MPQ-14 , a system that enabled radar-guided bomb release at night or in poor weather. Though the Marine Corps continued its tradition of intimate air–ground cooperation in the Korean War , the newly created United States Air Force (USAF) again moved away from CAS, now to strategic bombers and jet interceptors . Though eventually the Air Force supplied sufficient pilots and forward air controllers to provide battlefield support, coordination

5054-689: The Bomber Mafia ), followed by fighters ( Fighter Mafia ). In response to a 2007 United States Air Force nuclear weapons incident , Secretary of Defense Robert Gates accepted in June 2009 the resignations of Secretary of the Air Force Michael Wynne and the Chief of Staff of the Air Force General T. Michael Moseley . Moseley's successor, General Norton A. Schwartz , a former airlift and special operations pilot,

5187-764: The North African Campaign in 1941 the British Army and the Royal Air Force established Forward Air Support Links (FASL), a mobile air support system using ground vehicles. Light reconnaissance aircraft would observe enemy activity and report it by radio to the FASL which was attached at brigade level. The FASL was in communication (a two-way radio link known as a "tentacle") with the Air Support Control (ASC) Headquarters attached to

5320-949: The North American A-36 Apache , a P-51 Mustang modified with dive brakes, the Americans and British used no dedicated CAS aircraft in the Second World War, preferring fighters or fighter-bombers that could be pressed into CAS service. While some aircraft, such as the Hawker Typhoon and the P-47 Thunderbolt , performed admirably in that role, there were a number of compromises that prevented most fighters from making effective CAS platforms. Fighters were usually optimized for high-altitude operations without bombs or other external ordnance – flying at low level with bombs quickly expended fuel. Cannons had to be mounted differently for strafing – strafing required

5453-631: The Second Battle of the Aisne , the British debuted the first ground-attack aircraft, a modified F.E 2b fighter carrying 20 lb (9.1 kg) bombs and mounted machine-guns . After exhausting their ammunition, the planes returned to base for refueling and rearming before returning to the battle-zone. Other modified planes used in this role were the Airco DH.5 and Sopwith Camel – the latter

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5586-481: The Spanish Civil War lead to the creation of five ground-attack groups in 1938, four of which would be equipped with Stukas . The Luftwaffe matched its material acquisitions with advances in the air-ground coordination. General Wolfram von Richthofen organized a limited number of air liaison detachments that were attached to ground units of the main effort. These detachments existed to pass requests from

5719-769: The War Office in London to arrange for air support. The stunning effectiveness of German air-ground coordination spurred change. On the basis of tests in Northern Ireland in August 1940, Group Captain A. H. Wann RAF and Colonel J.D. Woodall (British Army) issued the Wann-Woodall Report, recommending the creation of a distinct tactical air force liaison officer (known colloquially as "tentacles") to accompany Army divisions and brigades. Their report spurred

5852-460: The invasion of Normandy , 33 divisions had received no joint air-ground training. The USAAF saw the greatest innovations in 1944 under General Elwood Quesada , commander of IX Tactical Air Command, supporting the First U.S. Army. He developed the "armored column cover", where on-call fighter-bombers maintained a high level of availability for important tank advances, allowing armor units to maintain

5985-577: The invasion of Normandy . CAS continued to advance during the conflicts of the Cold War , especially the Korean War and the Vietnam War ; major milestones included the introduction of attack helicopters , gunships , and dedicated CAS attack jets . The use of aircraft in the close air support of ground forces dates back to World War I , the first conflict to make significant military use of aerial forces. Air warfare, and indeed aviation itself,

6118-494: The 1973 Yom Kippur War , provided aircraft with an effective ranged anti-tank weapon. These considerations motivated armies to promote the helicopter from a support role to a combat arm. Though the U.S. Army controlled rotary-wing assets, coordination continued to pose a problem. During wargames, field commanders tended to hold back attack helicopters out of fear of air defenses, committing them too late to effectively support ground units. The earlier debate over control over CAS assets

6251-480: The Air Force and the Chief of Staff of the Air Force retain administrative authority over their members. Along with conducting independent air operations, the United States Air Force provides air support for land and naval forces and aids in the recovery of troops in the field. As of 2020 , the service operates approximately 5,500 military aircraft and approximately 400 ICBMs . The world's largest air force, it has

6384-528: The Air Force is the Chief of Staff of the Air Force , who exercises supervision over Air Force units and serves as one of the Joint Chiefs of Staff . As directed by the Secretary of Defense and Secretary of the Air Force, certain Air Force components are assigned to unified combatant commands . Combatant commanders are delegated operational authority of the forces assigned to them, while the Secretary of

6517-410: The Air Force states as global vigilance, global reach, and global power. Air superiority is "that degree of dominance in the air battle of one force over another which permits the conduct of operations by the former and its related land, sea, air, and special operations forces at a given time and place without prohibitive interference by the opposing force" (JP 1-02). Offensive Counter-Air (OCA)

6650-422: The Air Force's readiness to carry out the nuclear strike operations mission as well as from specific actions taken to assure allies as a part of extended deterrence. Dissuading others from acquiring or proliferating WMD and delivering them contributes to promoting security and is also an integral part of this mission. Moreover, different deterrence strategies are required to deter various adversaries, whether they are

6783-596: The Allied system used to subsequently gain victory in the air over Germany in 1944 and devastate its cities and industries. The use of forward air control to guide close air support (CAS) aircraft, so as to ensure that their attack hits the intended target and not friendly troops, was first used by the British Desert Air Force in North Africa, but not by the USAAF until operations in Salerno. During

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6916-547: The BEAST, the other portions include defending and protecting their base of operations, forming a structure of leadership, directing search and recovery, and basic self aid buddy care. During this event, the Military Training Instructors (MTI) act as mentors and opposing forces in a deployment exercise. In November 2022, the USAF announced that it will discontinue BEAST and replace it with another deployment training program called PACER FORGE. In 2007,

7049-613: The British achieved air superiority over the German aircraft sent to aid the Ottoman Turks , squadrons of S.E 5a's and D.H. 4s were sent on wide-ranging attacks against German and Turkish positions near the Jordan river . Combined with a ground assault led by General Edmund Allenby , three Turkish armies soon collapsed into a full rout. In the words of the attacking squadron's official report: No 1 Squadron made six heavy raids during

7182-580: The British system. At the start of the War, the United States Army Air Forces (USAAF) had, as its principal mission, the doctrine of strategic bombing. This incorporated the unerring belief that unescorted bombers could win the war without the advent of ground troops. This doctrine proved to be fundamentally flawed. However, during the entire course of the war the USAAF top brass clung to this doctrine, and hence operated independently of

7315-536: The CAS role. Though the Army gained more control over its own CAS due to the development of the helicopter gunship and attack helicopter, the Air Force continued to provide fixed-wing CAS for Army units. Over the course of the war, the adaptation of The Tactical Air Control System proved crucial to the improvement of Air Force CAS. Jets replaced propeller-driven aircraft with minimal issues. The assumption of responsibility for

7448-690: The Desert Air Force, was steadily refined and perfected, during the campaigns in Italy, Normandy and Germany. By the time the Italian Campaign had reached Rome , the Allies had established air superiority . They were then able to pre-schedule strikes by fighter-bomber squadrons; however, by the time the aircraft arrived in the strike area, oftentimes the targets, which were usually trucks, had fled. The initial solution to fleeing targets

7581-615: The Germans were first exposed to dive-bombing , which permitted greater accuracy while making attack aircraft more difficult to track by antiaircraft gunners. As a result, Ernst Udet , chief of the Luftwaffe's development, initiated procurement of close support dive bombers on the model of the U.S. Navy's Curtiss Helldiver , resulting in the Henschel Hs 123 , which was later replaced by the famous Junkers Ju 87 Stuka . Experience in

7714-717: The Luftwaffe refused to provide Erwin Rommel with an air liaison officer for the Afrika Korps , because it "would be against the best use of the air force as a whole." German CAS was also extensively used on the Eastern Front during the period 1941–1943. Their decline was caused by the growing strength of the Red Air Force and the redeployment of assets to defend against American and British strategic bombardment. Luftwaffe's loss of air superiority, combined with

7847-458: The Marine Corps during the war was whether to adopt the helicopter gunship as a part of CAS doctrine and what its adoption would mean for fixed-wing CAS in the Marine Corps. The issue would eventually be put to rest, however, as the helicopter gunship proved crucial in the combat environment of Vietnam. Though helicopters were initially armed merely as defensive measures to support the landing and extraction of troops, their value in this role led to

7980-511: The Navy , and the newly created Department of the Air Force. Prior to 1947, the responsibility for military aviation was shared between the Army Air Forces and its predecessor organizations (for land-based operations), the Navy (for sea-based operations from aircraft carriers and amphibious aircraft), and the Marine Corps (for close air support of Marine Corps operations). The 1940s proved to be important for military aviation in other ways as well. In 1947, Air Force Captain Chuck Yeager broke

8113-457: The Normandy beachhead, tank commanders were able to communicate directly with overhead fighter-bombers. However, despite the innovation, Quesada focused his aircraft on CAS only for major offensives. Typically, both British and American attack aircraft were tasked primarily to interdiction, even though later analysis showed them to be twice as dangerous as CAS. XIX TAC , under the command of General Otto P. Weyland used similar tactics to support

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8246-494: The RAF to create an RAF Army Cooperation Command and to develop tentacle equipment and procedures placing an Air Liaison Officer with each brigade. Although the RAF was working on its CAS doctrine in London, officers in North Africa improvised their own coordination techniques. In October 1941, Sir Arthur Tedder and Arthur Coningham , senior RAF commanders in North Africa, created joint RAF-Army Air Support Control staffs at each corps and armored division headquarters, and placed

8379-410: The ROMO. The purpose of nuclear deterrence operations (NDO) is to operate, maintain, and secure nuclear forces to achieve an assured capability to deter an adversary from taking action against vital US interests. In the event deterrence fails, the US should be able to appropriately respond with nuclear options. The sub-elements of this function are: Assure/Dissuade/Deter is a mission set derived from

8512-543: The US determines national or multinational security objectives and guidance, and develops and uses national resources to accomplish these objectives. These national objectives in turn provide the direction for developing overall military objectives, which are used to develop the objectives and strategy for each theater. At the operational level command and control, campaigns and major operations are planned, conducted, sustained, and assessed to accomplish strategic goals within theaters or areas of operations. These activities imply

8645-463: The USAF dwarfs all other U.S. and allied air components, it often provides support for allied forces in conflicts to which the United States is otherwise not involved, such as the 2013 French campaign in Mali . The USAF has also taken part in numerous humanitarian operations. Some of the more major ones include the following: The culture of the United States Air Force is primarily driven by pilots, at first those piloting bombers (driven originally by

8778-464: The USAF established the nuclear-focused Air Force Global Strike Command on 24 October 2008, which later assumed control of all USAF bomber aircraft. On 26 June 2009, the USAF released a force structure plan that cut fighter aircraft and shifted resources to better support nuclear, irregular and information warfare. On 23 July 2009, The USAF released their Unmanned Aerial System (UAS) Flight Plan, detailing Air Force UAS plans through 2047. One third of

8911-509: The USAF undertook a Reduction-in-Force (RIF). Because of budget constraints, the USAF planned to reduce the service's size from 360,000 active duty personnel to 316,000. The size of the active duty force in 2007 was roughly 64% of that of what the USAF was at the end of the first Gulf War in 1991. However, the reduction was ended at approximately 330,000 personnel in 2008 in order to meet the demand signal of combatant commanders and associated mission requirements. These same constraints have seen

9044-499: The USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947 . It is the second youngest branch of the United States Armed Forces and the fourth in order of precedence . The United States Air Force articulates its core missions as air supremacy , global integrated intelligence, surveillance and reconnaissance , rapid global mobility , global strike , and command and control . The United States Air Force

9177-430: The United Nations Commander, Gen. Mark Clark , to permanently attach an attack squadron to each of the four army corps in Korea. Though the request was denied, Clark allocated many more Navy and Air Force aircraft to CAS. Despite the rocky start, the USAF would also work to improve its coordination efforts. It eventually required pilots to serve 80 days as forward air controllers (FACs), which gave them an understanding of

9310-526: The ability to fulfill their primary mission. Rapid Global Mobility is essential to virtually every military operation, allowing forces to reach foreign or domestic destinations quickly, thus seizing the initiative through speed and surprise. Airlift is "operations to transport and deliver forces and materiel through the air in support of strategic, operational, or tactical objectives" (Annex 3–17, Air Mobility Operations). The rapid and flexible options afforded by airlift allow military forces and national leaders

9443-407: The ability to integrate, evaluate, and interpret information from available sources to create a finished intelligence product for presentation or dissemination to enable increased situational awareness. Dissemination and integration is "the delivery of intelligence to users in a suitable form and the application of the intelligence to appropriate missions, tasks, and functions" (JP 2-01). It provides

9576-476: The ability to present information and intelligence products across the ROMO enabling understanding of the operational environment to military and national decision-makers. Rapid global mobility is the timely deployment, employment, sustainment, augmentation, and redeployment of military forces and capabilities across the ROMO. It provides joint military forces the capability to move from place to place while retaining

9709-455: The ability to respond and operate in a variety of situations and time frames. The global reach capability of airlift provides the ability to apply US power worldwide by delivering forces to crisis locations. It serves as a US presence that demonstrates resolve and compassion in humanitarian crisis. Air refueling is "the refueling of an aircraft in flight by another aircraft" (JP 1-02). Air refueling extends presence, increases range, and serves as

9842-840: The activity of the Panzers . Joseph Stalin paid the Il-2 a great tribute in his own inimitable manner: when a particular production factory fell behind on its deliveries, Stalin sent the following cable to the factory manager: "They are as essential to the Red Army as air and bread". From Navy experiments with the KGW-1 Loon , the Navy designation for the German V-1 flying bomb, Marine Captain Marian Cranford Dalby developed

9975-410: The air request net by the Air Force improved communication equipment and procedures, which had long been a problem. Additionally, a major step in satisfying the Army's demands for more control over their CAS was the successful implementation of close air support control agencies at the corps level under Air Force control. Other notable adaptations were the usage of airborne Forward Air Controllers (FACs),

10108-588: The air. And in 1943, the USAAF changed their radios to a frequency incompatible with ground radios. The situation improved during the Italian Campaign , where American and British forces, working in close cooperation, exchanged CAS techniques and ideas. There, the AAF's XII Air Support Command and the Fifth U.S. Army shared headquarters, meeting every evening to plan strikes and devising a network of liaisons and radios for communications. However, friendly fire continued to be

10241-532: The army rather than the air force. Fighters and ground attack aircraft like the A-10 Thunderbolt II provide close air support using rockets, missiles, bombs, and strafing runs. During the Second World War, a mixture of dive bombers and fighters were used for CAS missions. Dive bombing permitted greater accuracy than level bombing runs, while the rapid altitude change made it more difficult for anti aircraft gunners to track. The Junkers Ju 87 Stuka

10374-599: The army version of the Navy's SBD-2, in response to the success of the Stuka and German CAS. Later, the USAAF developed a modification of the North American P-51 Mustang with dive brakes – the North American A-36 Apache . However, there was no training to match the purchases. Though Gen. Lesley McNair, commander of Army Ground Forces, pushed to change USAAF priorities, the latter failed to provide aircraft for even major training exercises. Six months before

10507-411: The battle area, while a third was being refuelled and rearmed at its base. If the first attack failed to destroy the tactical target, the aircraft in flight would be directed to continue the attack. The first aircraft would land for its own refuelling and rearming once the third had taken off. The CAS tactics developed and refined by the British during the campaign in North Africa served as the basis for

10640-430: The beginning of modern aerial warfare and set the stage for the development of the United States Air Force. The U.S. War Department created the first antecedent of the U.S. Air Force, as a part of the U.S. Army, on 1 August 1907, which through a succession of changes of organization, titles, and missions advanced toward eventual independence 40 years later. In World War II , almost 68,000 U.S. airmen died helping to win

10773-501: The conflict. Aviators, who wanted institutional independence from the Army, pushed for a view of air-power centered around interdiction, which would relieve them of the necessity of integrating with ground forces and allow them to operate as an independent military arm. They saw close air support as both the most difficult and most inefficient use of aerial assets. Close air support was the most difficult mission, requiring identifying and distinguishing between friendly and hostile units. At

10906-441: The corps or armoured division which could summon support through a Rear Air Support Link with the airfields. They also introduced the system of ground direction of air strikes by what was originally termed a "Mobile Fighter Controller" traveling with the forward troops. The controller rode in the "leading tank or armoured car" and directed a "cab rank" of aircraft above the battlefield. This system of close co-operation first used by

11039-422: The creation of the air liaison officer (ALO) position. The ALO is an aeronautically rated officer that has spent a tour away from the cockpit, serving as the primary adviser to the ground commander on the capabilities and limitations of airpower . The Korean War revealed important flaws in the application of CAS. Firstly, the USAF preferred interdiction over fire support while the Army regarded support missions as

11172-472: The creators of the combined-arms tactical doctrine commonly known as " blitzkrieg ", believed the best way to provide cover for the crossing would be a continuous stream of ground attack aircraft on French defenders. Though few guns were hit, the attacks kept the French under cover and prevented them from manning their guns. Aided by the sirens attached to Stukas , the psychological impact was disproportional to

11305-417: The day, dropped three tons of bombs and fired nearly 24,000 machine gun rounds. The close air support doctrine was further developed in the interwar period . Most theorists advocated the adaptation of fighters or light bombers into the role. During this period, airpower advocates crystallized their views on the role of air-power in warfare. Aviators and ground officers developed largely opposing views on

11438-851: The decision was made to create a unified RAF Iraq Command to use air power as a more cost-effective way of controlling large areas than the use of conventional land forces. It was effectively used to suppress the Great Iraqi Revolution of 1920 and various other tribal revolts. During the Spanish Civil War German volunteer aviators of the Condor Legion on the Nationalist side, despite little official support from their government, developed close air support tactics that proved highly influential for subsequent Luftwaffe doctrine. U.S. Marine Corps Aviation

11571-526: The destructive power of close air support (although as often as not, the Stukas were used as tactical bombers instead of close air support, leaving much of the actual work to the older Hs 123 units for the first years of the war). In addition, the reliance on air support over artillery reduced the demand for logistical support through the Ardennes. Though there were difficulties in coordinating air support with

11704-401: The difficulties from the ground perspective and helped cooperation when they returned to the cockpit. The USAF also provided airborne FACs in critical locations. The Army also learned to assist, by suppressing anti-aircraft fire prior to air strikes. The U.S. Army wanted a dedicated USAF presence on the battlefield to reduce fratricide , or the harm of friendly forces. This preference led to

11837-422: The enemy holds dear in a devastating manner. If a crisis occurs, rapid generation and, if necessary, deployment of nuclear strike capabilities will demonstrate US resolve and may prompt an adversary to alter the course of action deemed threatening to our national interest. Should deterrence fail, the President may authorize a precise, tailored response to terminate the conflict at the lowest possible level and lead to

11970-780: The enlisted members of the Tactical Air Control Party . Since their 1977 introduction into modern military practice for close air support purposes, General Crosbie E. Saint provided the AH-64 Apache the doctrinal cover for use in AirLand Battle operations such as in the NATO European theatre. Various aircraft can fill close air support roles. Military helicopters are often used for close air support and are so closely integrated with ground operations that in most countries they are operated by

12103-455: The fighters to map grid coordinates, or they might resort to a description of prominent terrain features as guidance. However, one drawback for the Rovers was the constant rotation of pilots, who were there for fortnightly stints, leading to a lack of institutional memory. US commanders, impressed by the British tactics at the Salerno landings, adapted their own doctrine to include many features of

12236-483: The fire and movement of friendly forces is not required" (Annex 3-03, Counterland Operations). Close Air Support is defined as "air action by fixed- and rotary-winged aircraft against hostile targets that are in close proximity to friendly forces and which require detailed integration of each air mission with the fire and movement of those forces" (JP 1-02). This can be as a pre-planned event or on demand from an alert posture (ground or airborne). It can be conducted across

12369-685: The first purpose-built ground attack aircraft , the Junkers J.I . During the 1918 German spring offensive , the Germans employed 30 squadrons, or Schlasta , of ground attack fighters and were able to achieve some initial tactical success. The British later deployed the Sopwith Salamander as a specialized ground attack aircraft, although it was too late to see much action. During the Sinai and Palestine Campaign of 1918, CAS aircraft functioned as an important factor in ultimate victory. After

12502-603: The globe to conduct current and future operations. Planning and directing is "the determination of intelligence requirements, development of appropriate intelligence architecture, preparation of a collection plan, and issuance of orders and requests to information collection agencies" (JP 2-01, Joint and National Intelligence Support to Military Operations). These activities enable the synchronization and integration of collection, processing, exploitation, analysis, and dissemination activities/resources to meet information requirements of national and military decision-makers. Collection

12635-544: The ground to the air, and receive reconnaissance reports, but they were not trained to guide aircraft onto targets. These preparations did not prove fruitful in the invasion of Poland , where the Luftwaffe focused on interdiction and dedicated few assets to close air support. But the value of CAS was demonstrated at the crossing of the Meuse River during the Invasion of France in 1940. General Heinz Guderian , one of

12768-671: The immediate postwar period. The newly formed Royal Air force (RAF) contributed to the defeat of the Afghan military during the Third Anglo-Afghan War by harassing Afghani troops and breaking up their formations. Z Force, an RAF air squadron, was also used to support ground operations during the Somaliland campaign , in which the Darawiish king Diiriye Guure 's insurgency was defeated. Following from these successes,

12901-632: The importance of CAS, views that would frame institutional battles for CAS in the 20th century. The inter-war period saw the use of CAS in a number of conflicts, including the Polish–Soviet War , the Spanish Civil War , the Iraqi revolt of 1920 and the Gran Chaco War . The British used air power to great effect in various colonial hotspots in the Middle East and North Africa during

13034-442: The intention of taking the initiative" (JP 1-02). It includes detection and warning; chemical, biological, radiological, and nuclear defense; camouflage, concealment, and deception; hardening; reconstitution; dispersion; redundancy; and mobility, counter-measures, and stealth. Airspace control is "a process used to increase operational effectiveness by promoting the safe, efficient, and flexible use of airspace" (JP 1-02). It promotes

13167-517: The late 1950s and early 1960s, the US Army began to identify a dedicated CAS need for itself. The Howze Board, which studied the question, published a landmark report describing the need for a helicopter-based CAS requirement. However, the Army did not follow the Howze Board recommendation initially. Nevertheless, it did eventually adopt the use of helicopter gunships and attack helicopters in

13300-572: The latter part of the Second World War. The Soviet Union 's Red Air Force quickly recognized the value of ground-support aircraft. As early as the Battles of Khalkhyn Gol in 1939, Soviet aircraft had the task of disrupting enemy ground operations. This use increased markedly after the June 1941 Axis invasion of the Soviet Union . Purpose-built aircraft such as the Ilyushin Il-2 Sturmovik proved highly effective in blunting

13433-573: The main concern for air forces. Then, the Army advocated a degree of decentralization for good reactivity, in contrast with the USAF-favored centralization of CAS. The third point dealt with the lack of training and joint culture, which are necessary for an adequate air-ground integration. Finally, USAF aircraft were not designed for CAS: "the advent of jet fighters , too fast to adjust their targets, and strategic bombers , too big to be used on theatre, rendered CAS much harder to implement". During

13566-762: The mid-2030s. On 22 October 2023, the USAF conducted its first-ever trilateral exercise with the South Korean and Japanese air forces near the Korean Peninsula. On 29 November 2023, a USAF Bell Boeing V-22 Osprey crashed in the Japan island of Yakushima killing 1 airman. In 2024, citing the Supreme Court 's ruling in Loper Bright Enterprises v. Raimondo , the Air Force refused to comply with an EPA order that they develop

13699-475: The modification of early helicopters as dedicated gunship platforms. Though not as fast as fixed-wing aircraft and consequently more vulnerable to anti-aircraft weaponry, helicopters could use terrain for cover, and more importantly, had much greater battlefield persistence owing to their low speeds. The latter made them a natural complement to ground forces in the CAS role. In addition, newly developed anti-tank guided missiles , demonstrated to great effectiveness in

13832-550: The need for aerial support of ground operations. Though the Luftwaffe , like its counterparts, tended to focus on strategic bombing, it was unique in its willingness to commit forces to CAS. Unlike the Allies, the Germans were not able to develop powerful strategic bombing capabilities, which implied industrial developments they were forbidden to take according to the Treaty of Versailles . In joint exercises with Sweden in 1934,

13965-438: The plane would fly in very low to the ground and release the bombs just above the trenches. The Germans were also quick to adopt this new form of warfare and were able to deploy aircraft in a similar capacity at Cambrai. While the British used single-seater planes, the Germans preferred the use of heavier two-seaters with an additional machine gunner in the aft cockpit . The Germans adopted the powerful Hannover CL.II and built

14098-415: The planes that the USAF planned to buy in the future were to be unmanned. According to Air Force Chief Scientist, Greg Zacharias , the USAF anticipates having hypersonic weapons by the 2020s, hypersonic unmanned aerial vehicles (also known as remotely-piloted vehicles, or RPAs) by the 2030s and recoverable hypersonic RPAs aircraft by the 2040s. The USAF intends to deploy a Sixth-generation jet fighter by

14231-546: The potential consequences of an accident or unauthorized act, nuclear weapons and nuclear weapon systems require special consideration and protection against risks and threats inherent in their peacetime and wartime environments. In conjunction with other entities within the Departments of Defense or Energy, the Air Force achieves a high standard of protection through a stringent nuclear surety program. This program applies to materiel, personnel, and procedures that contribute to

14364-483: The production of intelligence" (JP 2-01). It provides the ability to transform, extract, and make available collected information suitable for further analysis or action across the ROMO. Analysis and production is "the conversion of processed information into intelligence through the integration, evaluation, analysis, and interpretation of all source data and the preparation of intelligence products in support of known or anticipated user requirements" (JP 2-01). It provides

14497-409: The purpose of the USAF as: The five core missions of the Air Force have not changed dramatically since the Air Force became independent in 1947, but they have evolved and are now articulated as air superiority, global integrated ISR (intelligence, surveillance and reconnaissance), rapid global mobility, global strike, and command and control. The purpose of all of these core missions is to provide what

14630-528: The rapid advance, the Germans demonstrated consistently superior CAS tactics to those of the British and French defenders. Later, on the Eastern front , the Germans would devise visual ground signals to mark friendly units and to indicate direction and distance to enemy emplacements. Despite these accomplishments, German CAS was not perfect and suffered from the same misunderstanding and interservice rivalry that plagued other nations' air arms, and friendly fire

14763-483: The rapid armored advance of General Patton 's Third Army in its drive across France. Armed reconnaissance was a major feature of XIX TAC close air support, as the rapid advance left Patton's Southern flank open. Such was the close nature of cooperation between the Third Army and XIX TAC that Patton actually counted on XIX TAC to guard his flanks. This close air support from XIX TAC was credited by Patton as having been

14896-500: The rest of the Army. Thus it was initially unprepared to provide CAS, and in fact, had to be dragged "kicking and screaming" into the CAS function with the ground troops. USAAF doctrinal priorities for tactical aviation were, in order, air superiority, isolation of the battlefield via supply interdiction, and thirdly, close air support. Hence, during the North African Campaign , CAS was poorly executed, if at all. So few aerial assets were assigned to U.S. troops that they fired on anything in

15029-491: The safe, efficient, and flexible use of airspace, mitigates the risk of fratricide, enhances both offensive and defensive operations, and permits greater agility of air operations as a whole. It both deconflicts and facilitates the integration of joint air operations. Global integrated intelligence, surveillance, and reconnaissance (ISR) is the synchronization and integration of the planning and operation of sensors, assets, and processing, exploitation, dissemination systems across

15162-602: The safety, security, and control of nuclear weapons, thus assuring no nuclear accidents, incidents, loss, or unauthorized or accidental use (a Broken Arrow incident ). The Air Force continues to pursue safe, secure and effective nuclear weapons consistent with operational requirements. Adversaries, allies, and the American people must be highly confident of the Air Force's ability to secure nuclear weapons from accidents, theft, loss, and accidental or unauthorized use. This day-to-day commitment to precise and reliable nuclear operations

15295-428: The same time, targets engaged in combat are dispersed and concealed, reducing the effectiveness of air attacks. They also argued that the CAS mission merely duplicated the abilities of artillery, whereas interdiction provided a unique capability. Ground officers contended there was rarely sufficient artillery available, and the flexibility of aircraft would be ideal for massing firepower at critical points, while producing

15428-507: The sound barrier in his X-1 rocket-powered aircraft, beginning a new era of aeronautics in America. The predecessor organizations in the Army of today's Air Force are: During the early 2000s, two USAF aircraft procurement projects took longer than expected, the KC-X and F-35 programs. As a result, the USAF was setting new records for average aircraft age. Since 2005, the USAF has placed

15561-597: The target. If it can identify the target, it can't hit it. But if it does hit the target, it doesn't do a great deal of damage anyway." It is unsurprising, then, that MacArthur excluded USAF aircraft from the airspace over the Inchon Landing in September 1950, instead relying on Marine Aircraft Group 33 for CAS. In December 1951, Lt. Gen. James Van Fleet , commander of the Eighth U.S. Army , formally requested

15694-403: The universal acceptance of the integration of air power into combined arms warfare, with all of the war's major combatants having developed effective air-ground coordination techniques by the conflict's end. New techniques, such as the use of forward air control to guide CAS aircraft and identifying invasion stripes , also emerged at this time, being heavily shaped by the Italian Campaign and

15827-467: The war, with only the infantry suffering more casualties. In practice, the U.S. Army Air Forces ( USAAF ) was virtually independent of the Army during World War II, and in virtually every way functioned as an independent service branch, but airmen still pressed for formal independence. The National Security Act of 1947 was signed on 26 July 1947, which established the Department of the Air Force , but it

15960-472: Was an advocate of what later came to be known as ' Blitzkrieg ' tactics, thought that the speed of armoured tanks would render conventional artillery incapable of providing support fire. Instead he proposed that: actual 'offensive' support must come from an even more mobile artillery moving alongside. For this purpose the close co-operation of low-flying aircraft ... is essential As a continental power intent on offensive operations, Germany could not ignore

16093-503: Was not uncommon. For example, on the eve of the Meuse offensive, Guderian's superior cancelled his CAS plans and called for high-altitude strikes from medium bombers, which would have required halting the offensive until the air strikes were complete. Fortunately for the Germans, his order was issued too late to be implemented, and the Luftwaffe commander followed the schedule he had previously worked out with Guderian. As late as November 1941,

16226-500: Was not until 18 September 1947, when the first secretary of the Air Force, W. Stuart Symington , was sworn into office that the Air Force was officially formed as an independent service branch. The act created the National Military Establishment (renamed Department of Defense in 1949), which was composed of three subordinate Military Departments, namely the Department of the Army , the Department of

16359-553: Was not until 1916 that an air support doctrine was elaborated and dedicated fighters for the job were put into service. By that point, the startling and demoralizing effect that attack from the air could have on the troops in the trenches had been made clear. At the Battle of the Somme , 18 British armed reconnaissance planes strafed the enemy trenches after conducting surveillance operations. The success of this improvised assault spurred innovation on both sides. In 1917, following

16492-401: Was particularly successful in this role. Aircraft support was first integrated into a battle plan on a large scale at the 1917 Battle of Cambrai , where a significantly larger number of tanks were deployed than previously. By that time, effective anti-aircraft tactics were being used by the enemy infantry and pilot casualties were high, although air support was later judged as having been of

16625-487: Was reiterated between ground commanders and aviators. Nevertheless, the US Army incrementally gained increased control over its CAS role. In the mid-1970s, after Vietnam, the USAF decided to train an enlisted force to handle many of the tasks the ALO was saturated with, to include terminal attack control . Presently, the ALO mainly serves in the liaison role, the intricate details of mission planning and attack guidance left to

16758-477: Was relatively difficult at this early date to co-ordinate these attacks due to the primitive nature of air-to-ground radio communication . Though most air-power proponents sought independence from ground commanders and hence pushed the importance of interdiction and strategic bombing, they nonetheless recognized the need for close air support. From the commencement of hostilities in 1914, aviators engaged in sporadic and spontaneous attacks on ground forces , but it

16891-646: Was still in its infancy – and the direct effect of rifle caliber machine guns and light bombs of World War I aircraft was very limited compared with the power of (for instance) an average fighter bomber of World War II, but CAS aircraft were still able to achieve a powerful psychological impact. The aircraft was a visible and personal enemy – unlike artillery – presenting a personal threat to enemy troops, while providing friendly forces assurance that their superiors were concerned about their situation. The most successful attacks of 1917–1918 had included planning for co-ordination between aerial and ground units, although it

17024-434: Was still lacking. Since pilots operated under centralized control, ground controllers were never able to familiarize themselves with pilots, and requests were not processed quickly. Harold K. Johnson, then commander of the 8th Cavalry Regiment , 1st Cavalry Division (later Army Chief of Staff ) commented regarding CAS: "If you want it, you can't get it. If you can get it, it can't find you. If it can find you, it can't identify

17157-429: Was that he had repeatedly clashed with Wynne and Moseley over other important non-nuclear related issues to the service. This followed an investigation into two incidents involving mishandling of nuclear weapons : specifically a nuclear weapons incident aboard a B-52 flight between Minot AFB and Barksdale AFB , and an accidental shipment of nuclear weapons components to Taiwan. To put more emphasis on nuclear assets,

17290-478: Was the British "Rover" system. These were pairings of air controllers and army liaison officers at the front but able to switch communications seamlessly from one brigade to another – hence Rover. Incoming strike aircraft arrived with pre-briefed targets, which they would strike 20 minutes after arriving on station only if the Rovers had not directed them to another more pressing target. Rovers might call on artillery to mark targets with smoke shells, or they might direct

17423-560: Was the first conflict to make extensive use of CAS, albeit using relatively primitive methods in contrast to later warfare, though it was made evident that proper coordination between aerial and ground forces via radio made attacks more effective. Several conflicts during the interwar period —including the Polish–Soviet War , the Spanish Civil War , the Iraqi Revolt , and the Chaco War —made notable use of CAS. World War II marked

17556-530: Was the first officer appointed to that position who did not have a background as a fighter or bomber pilot. The Washington Post reported in 2010 that General Schwartz began to dismantle the rigid class system of the USAF, particularly in the officer corps. In 2014, following morale and testing/cheating scandals in the Air Force's missile launch officer community, Secretary of the Air Force Deborah Lee James admitted that there remained

17689-581: Was used as an intervention force in support of U.S. Marine Corps ground forces during the Banana Wars , in places such as Haiti , the Dominican Republic and Nicaragua . Marine Aviators experimented with air-ground tactics and in Haiti and Nicaragua they adopted the tactic of dive bombing . The observers and participants of these wars would base their CAS strategies on their experience of

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