HOME

TheInfoList



OR:

In
military tactics Military tactics encompasses the art of organizing and employing fighting forces on or near the battlefield. They involve the application of four battlefield functions which are closely related – kinetic or firepower, Mobility (military), mobil ...
, close air support (CAS) is defined as air action such as
air strike An airstrike, air strike or air raid is an offensive operation carried out by aircraft. Air strikes are delivered from aircraft such as blimps, balloons, fighters, heavy bombers, ground attack aircraft, attack helicopters and drones. The offic ...
s by
fixed Fixed may refer to: * ''Fixed'' (EP), EP by Nine Inch Nails * ''Fixed'', an upcoming 2D adult animated film directed by Genndy Tartakovsky * Fixed (typeface), a collection of monospace bitmap fonts that is distributed with the X Window System * ...
or rotary-winged aircraft against hostile targets near friendly forces and require detailed integration of each air mission with fire and movement of these forces and attacks with
aerial bomb An aerial bomb is a type of explosive or incendiary weapon intended to travel through the air on a predictable trajectory. Engineers usually develop such bombs to be dropped from an aircraft. The use of aerial bombs is termed aerial bombing. ...
s,
glide bomb A glide bomb or stand-off bomb is a standoff weapon with flight control surfaces to give it a flatter, gliding flight path than that of a conventional bomb without such surfaces. This allows it to be released at a distance from the target rat ...
s,
missile In military terminology, a missile is a guided airborne ranged weapon capable of self-propelled flight usually by a jet engine or rocket motor. Missiles are thus also called guided missiles or guided rockets (when a previously unguided rocket i ...
s,
rocket A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely fr ...
s,
autocannon An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bull ...
s,
machine gun A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) a ...
s, and even
directed-energy weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include we ...
s such as
laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The fir ...
s.''Close Air Support''. United States Department of Defense, 2014. The requirement for detailed integration because of proximity, fires or movement is the determining factor. CAS may need to be conducted during shaping operations with
Special Operations Forces Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...
(SOF) if the mission requires detailed integration with the fire and movement of those forces. A closely related subset of
air interdiction Air interdiction (AI), also known as deep air support (DAS), is the use of preventive tactical bombing and strafing by combat aircraft against enemy targets that are not an immediate threat, to delay, disrupt or hinder later enemy engagement of fr ...
(AI), battlefield air interdiction, denotes
interdiction Interdiction is a military term for the act of delaying, disrupting, or destroying enemy forces or supplies en route to the battle area. A distinction is often made between strategic and tactical interdiction. The former refers to operations whose ...
against units with near-term effects on friendly units, but which does not require integration with friendly troop movements. The term "battlefield air interdiction" is not currently used in U.S. joint doctrine. CAS requires excellent coordination with ground forces. In advanced modern militaries, that coordination is typically handled by specialists such as
Joint Fires Observer Forward observers in the U.S. military are artillery observers who carry the Military Occupational Specialty designator of ''13F'' in the United States Army and ''0861'' in the United States Marine Corps. They are officially called Joint Fire Supp ...
s (JFOs), Joint Terminal Attack Controllers (JTACs), and
forward air control Forward air control is the provision of guidance to close air support (CAS) aircraft intended to ensure that their attack hits the intended target and does not injure friendly troops. This task is carried out by a forward air controller (FAC). ...
lers (FACs). The
First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
was the first conflict to make extensive use of CAS, albeit using relatively primitive methods in contrast to later warfare. Even so, it was clear that coordination between aerial and ground forces via
radio communication Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmit ...
typically made such attacks more effective. Appropriately modified, the British F.E 2b fighter became the first ground-attack aircraft, while Germany produced the first purpose-built
ground attack aircraft An attack aircraft, strike aircraft, or attack bomber is a tactical military aircraft that has a primary role of carrying out airstrikes with greater precision than bombers, and is prepared to encounter strong low-level air defenses while pres ...
in the form of the
Junkers J.I The Junkers J.I (manufacturer's name J 4) was a German "J-class" armored sesquiplane of World War I, developed for low-level ground attack, observation and army cooperation. It is especially noteworthy as being the first all-metal aircraft to ...
; the
Sopwith Camel The Sopwith Camel is a British First World War single-seat biplane fighter aircraft that was introduced on the Western Front in 1917. It was developed by the Sopwith Aviation Company as a successor to the Sopwith Pup and became one of the b ...
was another successful early platform. Both the Sinai and Palestine Campaign and the German spring offensive of 1918 made extensive use of CAS aircraft. The
interwar period In the history of the 20th century, the interwar period lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days), the end of the World War I, First World War to the beginning of the World War II, Second World War. The in ...
saw CAS doctrine continue to advance, although theorists and aviators would often clash over its strategic value. Several different conflicts, including the
Polish–Soviet War The Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
, the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlists, and The Rebellion ( es, La Rebelión, lin ...
, colonial wars in the Middle East and the
Gran Chaco War The Chaco War ( es, link=no, Guerra del Chaco, gn, Cháko ÑorairõSecond World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
marked the universal acceptance of the integration of air power into combined arms warfare. Although the German ''
Luftwaffe The ''Luftwaffe'' () was the aerial-warfare branch of the German ''Wehrmacht'' before and during World War II. Germany's military air arms during World War I, the ''Luftstreitkräfte'' of the Imperial Army and the '' Marine-Fliegerabtei ...
'' was the only force to use CAS at the start of the war, all the major combatants had developed effective air-ground coordination techniques by the conflict's end. New techniques, such as the use of
forward air control Forward air control is the provision of guidance to close air support (CAS) aircraft intended to ensure that their attack hits the intended target and does not injure friendly troops. This task is carried out by a forward air controller (FAC). ...
to guide CAS aircraft and identifying
invasion stripes Invasion stripes were alternating black and white bands painted on the fuselages and wings of Allied aircraft during World War II to reduce the chance that they would be attacked by friendly forces during and after the Normandy Landings. Thre ...
, also emerged at this time, being heavily shaped by the Italian Campaign and the
invasion of Normandy Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II. The operation was launched on 6 June 1944 (D-Day) with the Norm ...
. CAS practices continued to advance in further conflicts, including the
Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
and the
Vietnam War The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...
; major milestones including the introduction of
attack helicopter An attack helicopter is an armed helicopter with the primary role of an attack aircraft, with the offensive capability of engaging ground targets such as enemy infantry, military vehicles and fortifications. Due to their heavy armament they ...
s and the creation of aerial
gunship A gunship is a military aircraft armed with heavy aircraft guns, primarily intended for attacking ground targets either as airstrike or as close air support. In modern usage the term "gunship" refers to fixed-wing aircraft having laterally-mo ...
s, such as the
Bell AH-1 Cobra The Bell AH-1 Cobra is a single-engined attack helicopter developed and manufactured by the American rotorcraft manufacturer Bell Helicopter. A member of the prolific Huey family, the AH-1 is also referred to as the HueyCobra or Snake. The A ...
and the
Douglas AC-47 Spooky The Douglas AC-47 Spooky (also nicknamed "Puff, the Magic Dragon") was the first in a series of fixed-wing gunships developed by the United States Air Force during the Vietnam War. It was designed to provide more firepower than light and mediu ...
. While many CAS aircraft have been propeller driven, several jet aircraft, such as the
A-10 Thunderbolt II The Fairchild Republic A-10 Thunderbolt II is a single-seat, twin-turbofan, straight-wing, subsonic attack aircraft developed by Fairchild Republic for the United States Air Force (USAF). In service since 1976, it is named for the Republic ...
(''Warthog'') and the Su-25 (''Frogfoot''), have been developed as well.


History


First World War

The use of aircraft in the close air support of ground forces dates back to the
First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, the first conflict to make significant military use of aerial forces. Hallion (1990), ''Airpower Journal'', p. 8. Air warfare, and indeed aviation itself, was still in its infancy – and the direct effect of rifle caliber
machine gun A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) a ...
s and light bombs of the First World War aircraft was very limited compared with the power of (for instance) an average
fighter bomber A fighter-bomber is a fighter aircraft that has been modified, or used primarily, as a light bomber or attack aircraft. It differs from bomber and attack aircraft primarily in its origins, as a fighter that has been adapted into other roles, wh ...
of the Second World War, but CAS aircraft were still able to achieve a powerful psychological impact. The aircraft was a visible and personal enemy – unlike
artillery Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during siege ...
– 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 was relatively difficult at this early date to co-ordinate these attacks due to the primitive nature of air-to-ground
radio communication Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmit ...
. 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.
House A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air condi ...
(2001), ''Combined Arms Warfare''.
From the commencement of hostilities in 1914, aviators engaged in sporadic and spontaneous attacks on
ground forces 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 ...
, but it was not until 1916 that an air support doctrine was elaborated and dedicated
fighters Fighter(s) or The Fighter(s) may refer to: Combat and warfare * Combatant, an individual legally entitled to engage in hostilities during an international armed conflict * Fighter aircraft, a warplane designed to destroy or damage enemy warplan ...
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
trench A trench is a type of excavation or in the ground that is generally deeper than it is wide (as opposed to a wider gully, or ditch), and narrow compared with its length (as opposed to a simple hole or pit). In geology, trenches result from eros ...
es had been made clear. At the
Battle of the Somme The Battle of the Somme ( French: Bataille de la Somme), also known as the Somme offensive, was a battle of the First World War fought by the armies of the British Empire and French Third Republic against the German Empire. It took place bet ...
, 18 British armed
reconnaissance In military operations, reconnaissance or scouting is the exploration of an area by military forces to obtain information about enemy forces, terrain, and other activities. Examples of reconnaissance include patrolling by troops (skirmisher ...
planes strafed the enemy trenches after conducting
surveillance Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. This can include observation from a distance by means of electronic equipment, such as c ...
operations. The success of this improvised assault spurred innovation on both sides. In 1917, following the
Second Battle of the Aisne The Second Battle of the Aisne (french: Bataille du Chemin des Dames or french: Seconde bataille de l'Aisne, 16 April – mid-May 1917) was the main part of the Nivelle Offensive, a Franco-British attempt to inflict a decisive defeat on the Germa ...
, the British debuted the first ground-attack aircraft, a modified F.E 2b fighter carrying
bomb A bomb is an explosive weapon that uses the Exothermic process, exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-t ...
s and mounted
machine-gun A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) ar ...
s. After exhausting their ammunition, the planes returned to base for refueling and rearming before returned to the battle-zone. Other modified planes used in this role were the
Airco DH.5 The Airco DH.5 was a British First World War single-seat biplane fighter aircraft. It was designed and manufactured at British aviation company Airco. Development was led by aircraft designer Geoffrey de Havilland as a replacement for the obs ...
and
Sopwith Camel The Sopwith Camel is a British First World War single-seat biplane fighter aircraft that was introduced on the Western Front in 1917. It was developed by the Sopwith Aviation Company as a successor to the Sopwith Pup and became one of the b ...
– the latter 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
tank A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and good battlefield mobility provided by tracks and a powerful engin ...
s 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 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 Air interdiction (AI), also known as deep air support (DAS), is the use of preventive tactical bombing and strafing by combat aircraft against enemy targets that are not an immediate threat, to delay, disrupt or hinder later enemy engagement of fr ...
) – 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; 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 A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a Pilot in command, pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the ...
. The Germans adopted the powerful
Hannover CL.II The Hannover CL.II was an escort fighter, produced in Germany during World War I, designed in response to a 1917 requirement by the '' Idflieg'' for such a machine to protect reconnaissance aircraft over enemy territory. It was a compact biplane o ...
and built the first purpose-built
ground attack aircraft An attack aircraft, strike aircraft, or attack bomber is a tactical military aircraft that has a primary role of carrying out airstrikes with greater precision than bombers, and is prepared to encounter strong low-level air defenses while pres ...
, the
Junkers J.I The Junkers J.I (manufacturer's name J 4) was a German "J-class" armored sesquiplane of World War I, developed for low-level ground attack, observation and army cooperation. It is especially noteworthy as being the first all-metal aircraft to ...
. During the 1918 German spring offensive, the Germans employed 30 squadrons, or ''
Schlasta The Schlachtstaffeln (often abbreviated to Schlastas) were specialized fighter-bomber squadrons in the German Luftstreitkräfte during World War I. Background The Schlastas had their origins in the ''Schutzstaffeln'' (escort squadrons, often abb ...
'', of ground attack fighters and were able to achieve some initial tactical success. The British later deployed the
Sopwith Salamander The Sopwith TF.2 Salamander was a British ground-attack aircraft of the First World War designed by the Sopwith Aviation Company which first flew in April 1918. It was a single-engined, single-seat biplane, based on the Sopwith Snipe fighter, w ...
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 the British achieved
air superiority Aerial supremacy (also air superiority) is the degree to which a side in a conflict holds control of air power over opposing forces. There are levels of control of the air in aerial warfare. Control of the air is the aerial equivalent of c ...
over the German aircraft sent to aid the
Ottoman Turks The Ottoman Turks ( tr, Osmanlı Türkleri), were the Turkic founding and sociopolitically the most dominant ethnic group of the Ottoman Empire ( 1299/1302–1922). Reliable information about the early history of Ottoman Turks remains scarce, ...
, 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 The Jordan River or River Jordan ( ar, نَهْر الْأُرْدُنّ, ''Nahr al-ʾUrdunn'', he, נְהַר הַיַּרְדֵּן, ''Nəhar hayYardēn''; syc, ܢܗܪܐ ܕܝܘܪܕܢܢ ''Nahrāʾ Yurdnan''), also known as ''Nahr Al-Shariea ...
. Combined with a ground assault led by General
Edmund Allenby Field Marshal Edmund Henry Hynman Allenby, 1st Viscount Allenby, (23 April 1861 – 14 May 1936) was a senior British Army officer and Imperial Governor. He fought in the Second Boer War and also in the First World War, in which he led th ...
, three Turkish armies soon collapsed into a full rout. In the words of the attacking squadron's official report:


Inter-war period

The close air support doctrine was further developed in the
interwar period In the history of the 20th century, the interwar period lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days), the end of the World War I, First World War to the beginning of the World War II, Second World War. The in ...
. Most theorists advocated the adaptation of fighters or
light bomber A light bomber is a relatively small and fast type of military bomber aircraft that was primarily employed before the 1950s. Such aircraft would typically not carry more than one ton of ordnance. The earliest light bombers were intended to dro ...
s into the role. During this period,
airpower Airpower or air power consists of the application of military aviation, military strategy and strategic theory to the realm of aerial warfare and close air support. Airpower began in the advent of powered flight early in the 20th century. Airpo ...
advocates crystallized their views on the role of air-power in warfare. Aviators and ground officers developed largely opposing views on 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 Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
, the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlists, and The Rebellion ( es, La Rebelión, lin ...
, the
Iraqi revolt of 1920 The Iraqi revolt against the British, also known as the 1920 Iraqi Revolt or the Great Iraqi Revolution, started in Baghdad in the summer of 1920 with mass demonstrations by Iraqis, including protests by embittered officers from the old Ottoman ...
and the
Gran Chaco War The Chaco War ( es, link=no, Guerra del Chaco, gn, Cháko Ñorairõ The British used air power to great effect in various colonial hotspots in the
Middle East The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabian Peninsula, Arabia (including the Arabian Peninsula and Bahrain), Anatolia, Asia Minor (Asian part of Turkey except Hatay Pro ...
and
North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...
during the immediate postwar period. The newly formed
Royal Air force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
(RAF) contributed to the defeat of the Afghan military during the
Third Anglo-Afghan War The Third Anglo-Afghan War; fa, جنگ سوم افغان-انگلیس), also known as the Third Afghan War, the British-Afghan War of 1919, or in Afghanistan as the War of Independence, began on 6 May 1919 when the Emirate of Afghanistan inv ...
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, the decision was made to create a unified
RAF Iraq Command Iraq Command was the Royal Air Force (RAF) commanded British Armed Forces, inter-service Command (military formation), command in charge of United Kingdom, British forces in Iraq in the 1920s and early 1930s, during the period of the British Man ...
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 The Iraqi revolt against the British, also known as the 1920 Iraqi Revolt or the Great Iraqi Revolution, started in Baghdad in the summer of 1920 with mass demonstrations by Iraqis, including protests by embittered officers from the old Ottoman ...
and various other tribal revolts. During the Spanish Civil War German volunteer aviators of the
Condor Legion The Condor Legion (german: Legion Condor) was a unit composed of military personnel from the air force and army of Nazi Germany, which served with the Nationalist faction during the Spanish Civil War of July 1936 to March 1939. The Condor Legio ...
on the Nationalist side, despite little official support from their government, developed close air support tactics that proved highly influential for subsequent
Luftwaffe The ''Luftwaffe'' () was the aerial-warfare branch of the German ''Wehrmacht'' before and during World War II. Germany's military air arms during World War I, the ''Luftstreitkräfte'' of the Imperial Army and the '' Marine-Fliegerabtei ...
doctrine. U.S. Marine Corps Aviation was used as an intervention force in support of U.S. Marine Corps ground forces during the
Banana Wars The Banana Wars were a series of conflicts that consisted of military occupation, police action, and intervention by the United States in Central America and the Caribbean between the end of the Spanish–American War in 1898 and the inception ...
, in places such as
Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...
, the
Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares wit ...
and
Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the cou ...
. Marine Aviators experimented with air-ground tactics and in Haiti and Nicaragua they adopted the tactic of
dive bombing A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target simplifies the bomb's trajectory and allows the pilot to keep visual contact throughou ...
. Corum & Johnson, ''Small Wars'', pp. 23-40. The observers and participants of these wars would base their CAS strategies on their experience of 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 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 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 Major-General John Frederick Charles "Boney" Fuller (1 September 1878 – 10 February 1966) was a senior British Army officer, military historian, and strategist, known as an early theorist of modern armoured warfare, including categorising p ...
and
Basil Liddell Hart Sir Basil Henry Liddell Hart (31 October 1895 – 29 January 1970), commonly known throughout most of his career as Captain B. H. Liddell Hart, was a British soldier, military historian and military theorist. He wrote a series of military histo ...
. Hart, who was an advocate of what later came to be known as '
Blitzkrieg Blitzkrieg ( , ; from 'lightning' + 'war') is a word used to describe a surprise attack using a rapid, overwhelming force concentration that may consist of armored and motorized or mechanized infantry formations, together with close air su ...
' tactics, thought that the speed of armoured tanks would render conventional artillery incapable of providing support fire. Instead he proposed that:


Second World War


''Luftwaffe''

As a continental power intent on offensive operations, Germany could not ignore the need for aerial support of ground operations. Though the ''
Luftwaffe The ''Luftwaffe'' () was the aerial-warfare branch of the German ''Wehrmacht'' before and during World War II. Germany's military air arms during World War I, the ''Luftstreitkräfte'' of the Imperial Army and the '' Marine-Fliegerabtei ...
'', 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 Strategic bombing is a military strategy used in total war with the goal of defeating the enemy by destroying its morale, its economic ability to produce and transport materiel to the theatres of military operations, or both. It is a systematica ...
capabilities, which implied industrial developments they were forbidden to take according to the
Treaty of Versailles The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June ...
. In joint exercises with
Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...
in 1934, the Germans were first exposed to
dive-bombing A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target simplifies the bomb's trajectory and allows the pilot to keep visual contact throughou ...
, which permitted greater accuracy while making attack aircraft more difficult to track by antiaircraft gunners. As a result,
Ernst Udet Ernst Udet (26 April 1896 – 17 November 1941) was a German pilot during World War I and a ''Luftwaffe'' Colonel-General (''Generaloberst'') during World War II. Udet joined the Imperial German Air Service at the age of 19, and eventually ...
, 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 The Henschel Hs 123 was a single-seat biplane dive bomber and close-support attack aircraft flown by the German ''Luftwaffe'' during the Spanish Civil War and the early to midpoint of World War II. It proved to be robust, durable and effective e ...
, which was later replaced by the famous
Junkers Ju 87 The Junkers Ju 87 or Stuka (from ''Sturzkampfflugzeug'', "dive bomber") was a German dive bomber and ground-attack aircraft. Designed by Hermann Pohlmann, it first flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's Con ...
''Stuka''. Experience in the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlists, and The Rebellion ( es, La Rebelión, lin ...
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 Wolfram Karl Ludwig Moritz Hermann Freiherr von Richthofen (10 October 1895 – 12 July 1945) was a German World War I flying ace who rose to the rank of ''Generalfeldmarschall'' in the Luftwaffe during World War II. Born in 1895 into a fa ...
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 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 The invasion of Poland (1 September – 6 October 1939) was a joint attack on the Republic of Poland by Nazi Germany and the Soviet Union which marked the beginning of World War II. The German invasion began on 1 September 1939, one week aft ...
, 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 The Meuse ( , , , ; wa, Moûze ) or Maas ( , ; li, Maos or ) is a major European river, rising in France and flowing through Belgium and the Netherlands before draining into the North Sea from the Rhine–Meuse–Scheldt delta. It has a t ...
during the
Invasion of France France has been invaded on numerous occasions, by foreign powers or rival French governments; there have also been unimplemented invasion plans. * the 1746 War of the Austrian Succession, Austria-Italian forces supported by the British navy attemp ...
in 1940. General
Heinz Guderian Heinz Wilhelm Guderian (; 17 June 1888 – 14 May 1954) was a German general during World War II who, after the war, became a successful memoirist. An early pioneer and advocate of the " blitzkrieg" approach, he played a central role in t ...
, one of the creators of the combined-arms tactical doctrine commonly known as "''
blitzkrieg Blitzkrieg ( , ; from 'lightning' + 'war') is a word used to describe a surprise attack using a rapid, overwhelming force concentration that may consist of armored and motorized or mechanized infantry formations, together with close air su ...
''", 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 the destructive power of close air support (although as often as not, the Stukas were used as
tactical bomber Tactical bombing is aerial bombing aimed at targets of immediate military value, such as combatants, military installations, or military equipment. This is in contrast to strategic bombing, or attacking enemy cities and factories to cripple fut ...
s 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 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 Interservice rivalry is the rivalry between different branches of a country's armed forces, in other words the competition for limited resources among a nation's land, naval, coastal, air, and space forces. The term also applies to the rivalr ...
that plagued other nations' air arms, and friendly fire 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, the Luftwaffe refused to provide
Erwin Rommel Johannes Erwin Eugen Rommel () (15 November 1891 – 14 October 1944) was a German field marshal during World War II. Popularly known as the Desert Fox (, ), he served in the ''Wehrmacht'' (armed forces) of Nazi Germany, as well as servi ...
with an air liaison officer for the ''
Afrika Korps The Afrika Korps or German Africa Corps (, }; DAK) was the German expeditionary force in Africa during the North African Campaign of World War II. First sent as a holding force to shore up the Italian defense of its African colonies, the ...
'', 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 a declining supply of aircraft and fuel, crippled their ability to provide effective CAS on the western front after 1943.


RAF and USAAF

The
Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
(RAF) entered the war woefully unprepared to provide CAS. In 1940 during the
Battle of France The Battle of France (french: bataille de France) (10 May – 25 June 1940), also known as the Western Campaign ('), the French Campaign (german: Frankreichfeldzug, ) and the Fall of France, was the Nazi Germany, German invasion of French Third Rep ...
, 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 the
War Office The War Office was a department of the British Government responsible for the administration of the British Army between 1857 and 1964, when its functions were transferred to the new Ministry of Defence (MoD). This article contains text from ...
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 Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...
in August 1940,
Group Captain Group captain is a senior commissioned rank in the Royal Air Force, where it originated, as well as the air forces of many countries that have historical British influence. It is sometimes used as the English translation of an equivalent rank i ...
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 the RAF to create an
RAF Army Cooperation Command The RAF Army Co-operation Command was a short-lived command of the Royal Air Force during the Second World War, comprising the army cooperation units of the RAF. The command was formed on 1 December 1940 when No. 22 (Army Co-Operation) Group, ...
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 Marshal of the Royal Air Force Arthur William Tedder, 1st Baron Tedder, (11 July 1890 – 3 June 1967) was a senior Royal Air Force commander. He was a pilot and squadron commander in the Royal Flying Corps in the First World War and he went o ...
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 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 A cab rank (in British English) or taxicab stand (in American English) is an area where taxicabs queue to await passengers. Cab rank may also refer to: * Bank (in Cockney rhyming slang) * A flying reserve of fighter-bomber aircraft that can be cal ...
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 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 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 Forward air control is the provision of guidance to close air support (CAS) aircraft intended to ensure that their attack hits the intended target and does not injure friendly troops. This task is carried out by a forward air controller (FAC). ...
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 The Desert Air Force (DAF), also known chronologically as Air Headquarters Western Desert, Air Headquarters Libya, the Western Desert Air Force, and the First Tactical Air Force (1TAF), was an Allied tactical air force created from No. 204 ...
in North Africa, but not by the USAAF until operations in Salerno. During the North African Campaign in 1941 the
British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurk ...
and the
Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
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 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 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 , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...
, the Allies had established
air superiority Aerial supremacy (also air superiority) is the degree to which a side in a conflict holds control of air power over opposing forces. There are levels of control of the air in aerial warfare. Control of the air is the aerial equivalent of c ...
. They were then able to pre-schedule strikes by
fighter-bomber A fighter-bomber is a fighter aircraft that has been modified, or used primarily, as a light bomber or attack aircraft. It differs from bomber and attack aircraft primarily in its origins, as a fighter that has been adapted into other roles, wh ...
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 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 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 the British system. At the start of the War, the
United States Army Air Forces The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II ...
(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 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 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 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 Invasion stripes were alternating black and white bands painted on the fuselages and wings of Allied aircraft during World War II to reduce the chance that they would be attacked by friendly forces during and after the Normandy Landings. Thre ...
painted on all Allied aircraft from 1944. In 1944, USAAF commander Lt. Gen. Henry ("Hap") Arnold acquired 2 groups of A-24 dive bombers, 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 The North American Aviation P-51 Mustang is an American long-range, single-seat fighter aircraft, fighter and fighter-bomber used during World War II and the Korean War, among other conflicts. The Mustang was designed in April 1940 by a team ...
with dive brakes – the
North American A-36 Apache The North American A-36 (listed in some sources as "Apache" or "Invader", but generally called Mustang) was the ground-attack/dive bomber version of the North American P-51 Mustang, from which it could be distinguished by the presence of rectang ...
. 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 the
invasion of Normandy Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II. The operation was launched on 6 June 1944 (D-Day) with the Norm ...
, 33 divisions had received no joint air-ground training. The USAAF saw the greatest innovations in 1944 under General
Elwood Quesada Elwood Richard Quesada, CB, CBE (April 13, 1904 – February 9, 1993), nicknamed "Pete", was a United States Air Force Lt. General, FAA administrator, and, later, a club owner in Major League Baseball. Early years Elwood Richard Quesada was b ...
, 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 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 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 Otto Paul Weyland (January 27, 1903 – September 2, 1979) was a United States Air Force general and the post-World War II Commander of Far East Air Forces during the Korean War and of Tactical Air Command. Early life His family moved to Texas ...
used similar tactics to support the rapid armored advance of
General Patton George Smith Patton Jr. (November 11, 1885 – December 21, 1945) was a general in the United States Army who commanded the Seventh United States Army in the Mediterranean Theater of World War II, and the Third United States Army in France ...
'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 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 The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
. Navy and Marine
F6F Hellcat The Grumman F6F Hellcat is an American Carrier-based aircraft, carrier-based fighter aircraft of World War II. Designed to replace the earlier Grumman F4F Wildcat, F4F Wildcat and to counter the Japanese Mitsubishi A6M Zero, it was the United St ...
s and
F4U Corsair The Vought F4U Corsair is an American fighter aircraft which saw service primarily in World War II and the Korean War. Designed and initially manufactured by Chance Vought, the Corsair was soon in great demand; additional production contract ...
s used a variety of
ordnance Ordnance may refer to: Military and defense *Materiel in military logistics, including weapons, ammunition, vehicles, and maintenance tools and equipment. **The military branch responsible for supplying and developing these items, e.g., the Unit ...
such as conventional bombs, rockets and napalm to dislodge or attack Japanese troops using cave complexes in the latter part of the Second World War.Barber 1946
Table 2


Red Air Force

The
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
's
Red Air Force The Soviet Air Forces ( rus, Военно-воздушные силы, r=Voyenno-vozdushnyye sily, VVS; literally "Military Air Forces") were one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces. The Air Forces ...
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 The Ilyushin Il-2 (Russian: Илью́шин Ил-2) is a ground-attack plane that was produced by the Soviet Union in large numbers during the Second World War. The word ''shturmovík'' (Cyrillic: штурмовик), the generic Russian term ...
''Sturmovik'' proved highly effective in blunting the activity of the ''
Panzer This article deals with the tanks (german: panzer) serving in the German Army (''Deutsches Heer'') throughout history, such as the World War I tanks of the Imperial German Army, the interwar and World War II tanks of the Nazi German Wehrmacht, ...
s''.
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secreta ...
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 The Workers' and Peasants' Red Army (Russian: Рабо́че-крестья́нская Кра́сная армия),) often shortened to the Red Army, was the army and air force of the Russian Soviet Federative Socialist Republic and, after ...
as air and bread".


Korean War

From Navy experiments with the KGW-1 Loon, the Navy designation for the German V-1 flying bomb, Marine Captain Marian Cranford Dalby developed the AN/MPQ-14, a system that enabled radar-guided bomb release at night or in poor weather. Krulak, ''First to Fight'', pp. 113–119. Though the Marine Corps continued its tradition of intimate air–ground cooperation in the
Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
, the newly created
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 ...
(USAF) again moved away from CAS, now to strategic bombers and jet interceptor aircraft, interceptors. Though eventually the Air Force supplied sufficient pilots and forward air controllers to provide battlefield support, coordination 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 (United States), 8th Cavalry Regiment, 1st Cavalry Division (later Chief of Staff of the United States Army, 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 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."#Blair, Blair (1987), ''Forgotten War'', p. 577. It is unsurprising, then, that Douglas MacArthur, MacArthur excluded USAF aircraft from the airspace over the Battle of Inchon, 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 the United Nations Commander, Gen. Mark W. Clark, 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 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 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 Airpower or air power consists of the application of military aviation, military strategy and strategic theory to the realm of aerial warfare and close air support. Airpower began in the advent of powered flight early in the 20th century. Airpo ...
. 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 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 Fighter aircraft, jet fighters, too fast to adjust their targets, and strategic bombers, too big to be used on theatre, rendered CAS much harder to implement".


Vietnam and the CAS role debate

During 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
gunship A gunship is a military aircraft armed with heavy aircraft guns, primarily intended for attacking ground targets either as airstrike or as close air support. In modern usage the term "gunship" refers to fixed-wing aircraft having laterally-mo ...
s and
attack helicopter An attack helicopter is an armed helicopter with the primary role of an attack aircraft, with the offensive capability of engaging ground targets such as enemy infantry, military vehicles and fortifications. Due to their heavy armament they ...
s in 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 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), a role previously dominated by FACs on the ground, and the Operation Arc Light, 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. One of the main debates taking place within 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 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 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 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 rank, 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 the enlisted members of the Tactical Air Control Party.


Aircraft

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 the army rather than the air force. Fighters and ground attack aircraft like the
A-10 Thunderbolt II The Fairchild Republic A-10 Thunderbolt II is a single-seat, twin-turbofan, straight-wing, subsonic attack aircraft developed by Fairchild Republic for the United States Air Force (USAF). In service since 1976, it is named for the Republic ...
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 The Junkers Ju 87 or Stuka (from ''Sturzkampfflugzeug'', "dive bomber") was a German dive bomber and ground-attack aircraft. Designed by Hermann Pohlmann, it first flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's Con ...
''Stuka'' 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 Siren (alarm), sirens on its landing gear to enhance its psychological effect. Some variants of the Stuka were equipped with a pair of BK 3,7, ''Bordkanone'' BK 3,7 cannons mounted in under-wing gun pods, each loaded with two six-round magazines of kinetic energy penetrator, armour-piercing tungsten carbide-cored ammunition, for anti-tank operations. Other than the
North American A-36 Apache The North American A-36 (listed in some sources as "Apache" or "Invader", but generally called Mustang) was the ground-attack/dive bomber version of the North American P-51 Mustang, from which it could be distinguished by the presence of rectang ...
, a North American P-51 Mustang, P-51 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 a further and lower Gun harmonisation, 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 Ilyushin Il-2 (Russian: Илью́шин Ил-2) is a ground-attack plane that was produced by the Soviet Union in large numbers during the Second World War. The word ''shturmovík'' (Cyrillic: штурмовик), the generic Russian term ...
, the single most produced military aircraft at any point in world history.Hardesty 1982, p. 170. The Soviet military also frequently deployed the Polikarpov Po-2 biplane as a ground attack aircraft.Gordon 2008, p. 285. The Royal Navy Hawker Sea Fury fighters and the U.S. Vought F4U Corsair and Douglas A-1 Skyraider were operated in a ground attack capacity during the
Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
. Outside of the conflict, there were numerous other occasions that the Sea Fury was used as a ground attack platform. Cuban Sea Furies, operated by the ''Cuban Revolutionary Armed Forces, Fuerza Aérea Revolucionaria'' ("Revolutionary Air Force"; FAR), were used to oppose the US-orchestrated Bay of Pigs Invasion to attack incoming transport ships and disembarking ground forces alike.Mario E. "Bay of Pigs: In the Skies Over Girón".
2000, (18 March 2014.)
Cooper, Tom. "Clandestine US Operations: Cuba, 1961, Bay of Pigs".
2007, (18 March 2014.)
The A-1 Skyraider also saw later use, especially throughout the
Vietnam War The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...
.Dorr and Bishop 1996, pp. 34–35. In the
Vietnam War The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...
, the United States introduced a number of fixed and rotary wing gunships, including several cargo aircraft that were refitted as gun platforms to serve as CAS and air interdiction aircraft. The first of these to emerge was the
Douglas AC-47 Spooky The Douglas AC-47 Spooky (also nicknamed "Puff, the Magic Dragon") was the first in a series of fixed-wing gunships developed by the United States Air Force during the Vietnam War. It was designed to provide more firepower than light and mediu ...
, which was converted from the Douglas C-47 Skytrain/Douglas DC-3. Some commentators have remarked on the high effectiveness of the AC-47 in the CAS role. The USAF developed several other platforms following on from the AC-47, including the Fairchild AC-119 and the Lockheed AC-130. The AC-130 has had a particularly lengthy service, being used extensively during the War in Afghanistan (2001–present), War in Afghanistan, the Iraq War and the 2011 military intervention in Libya, US military intervention in Libya during the early twenty-first century. Multiple variants of the AC-130 have been developed and it has continued to be modernised, including the adoption of various new armaments.Michael Sirak with Marc Schanz
"Spooky Gun Swap Canceled"
''Air Force Magazine'', October 2008, Volume 91, Number 10, p. 24.
Usually close support is thought to be only carried out by
fighter-bomber A fighter-bomber is a fighter aircraft that has been modified, or used primarily, as a light bomber or attack aircraft. It differs from bomber and attack aircraft primarily in its origins, as a fighter that has been adapted into other roles, wh ...
s or dedicated ground-attack aircraft, such as the
A-10 Thunderbolt II The Fairchild Republic A-10 Thunderbolt II is a single-seat, twin-turbofan, straight-wing, subsonic attack aircraft developed by Fairchild Republic for the United States Air Force (USAF). In service since 1976, it is named for the Republic ...
(''Warthog'') or Su-25 (''Frogfoot''), but even large high-altitude bombers have successfully filled close support roles using precision-guided munitions. During Operation Enduring Freedom, the lack of fighter aircraft forced military planners to rely heavily on US bombers, particularly the B-1B Lancer, to fill the CAS role. Bomber CAS, relying mainly on Global Positioning System, GPS guided weapons and laser-guided JDAMs has evolved into a devastating tactical employment methodology and has changed US doctrinal thinking regarding CAS in general. With significantly longer loiter times, range, and weapon capacity, bombers can be deployed to bases outside of the immediate battlefield area, with 12-hour missions being commonplace since 2001. After the initial collapse of the Taliban regime in Afghanistan, airfields in Afghanistan became available for continuing operations against the Taliban and Al-Qaeda. This resulted in a great number of CAS operations being undertaken by aircraft from Belgium (F-16 Fighting Falcon), Denmark (F-16), France (Dassault Mirage 2000N/2000D, Mirage 2000D), the Netherlands (F-16), Norway (F-16), the United Kingdom (BAE Harrier II, Harrier GR7s, GR9s and Panavia Tornado#Royal Air Force, Tornado GR4s) and the United States (A-10, F-16, AV-8B Harrier II, F-15E Strike Eagle, F/A-18 Hornet, F/A-18E/F Super Hornet, UH-1Y Venom). The use of information technology to direct and coordinate precision air support has increased the importance of intelligence,
surveillance Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. This can include observation from a distance by means of electronic equipment, such as c ...
, and
reconnaissance In military operations, reconnaissance or scouting is the exploration of an area by military forces to obtain information about enemy forces, terrain, and other activities. Examples of reconnaissance include patrolling by troops (skirmisher ...
in using CAS. Laser, GPS, and battlefield data transfer are routinely used to coordinate with a wide variety of air platforms able to provide CAS. Recent doctrine reflects the increased use of electronic and optical technology to direct targeted fires for CAS. Air platforms communicating with ground forces can also provide additional aerial-to-ground visual search, ground-convoy escort, and enhancement of command and control (C2), assets which can be particularly important for low intensity conflict.#Haun, Haun (2006), ''Air & Space Power Journal.


See also

* Artillery observer * Attack aircraft * Counter-insurgency aircraft, a specific type of CAS aircraft * ''Flying Leathernecks'' * Forward air control * Light Attack/Armed Reconnaissance * Pace-Finletter MOU 1952 * Tactical bombing, a general term for the type of bombing that includes CAS and air interdiction


References


Citations


Bibliography

* . * Alvin D. Coox, Coox, Alvin D.: ''Nomonhan: Japan Against Russia, 1939''. Two volumes; 1985, Stanford University Press. * . * Darling, Kev. ''Hawker Sea Fury (Warbird Tech Vol. 37).'' North Branch, Minnesota: Voyageur Press, 2002. . * Delve, Ken. ''The Source Book of the RAF''. Shrewsbury, Shropshire, UK: Airlife Publishing Ltd., 1994. . * Dorr, Robert F. and Chris Bishop. ''Vietnam Air War Debrief''. London: Aerospace Publishing, 1996. . * Gordon, Yefim. "Soviet Air Power in World War 2". Hersham-Surrey, UK: Midland Publishing, 2008. . * . * Gruenhagen, Robert W. ''Mustang: The Story of the P-51 Mustang''. New York: Arco Publishing Company, Inc., 1969. . * . * . * Hardesty, Von. ''Red Phoenix: The Rise of Soviet Air Power, 1941–1945''. Washington, D.C.: Smithsonian Books, 1982. . * . * . * Kinzey, Bert. ''F4U Corsair Part 2: F4U-4 Through F4U-7: Detail and Scale Vol 56''. Carrolton, Texas: Squadron Signal Publications, 1998. . * Kinzey, Bert. ''P-51 Mustang Mk In Detail & Scale: Part 1; Prototype through P-51C''. Carrollton, Texas: Detail & Scale Inc., 1996. . * . * Spires, David, Air Power for Patton's Army: The XIX Tactical Air Command in the Second World War (Washington, D.C.: Air Force History and Museums Program, 2002. * . * Thomas, Chris and Christopher Shores. ''The Typhoon and Tempest Story''. London: Arms and Armour Press, 1988. .


External links


Can Our Jets Support the Guys on the Ground?
– ''Popular Science''
The Forward Air Controller Association

The ROMAD Locator
The home of the current ground FAC
Operation Anaconda: An Airpower Perspective
– Close air support during Operation Anaconda, United States Airforce, 2005. {{Military aircraft types (roles) Aerial warfare tactics, Close