451st Air Expeditionary Group
The 451st Air Expeditionary Group was a provisional United States Air Force unit that conducted heavy bombing, strategic missile, intelligence, surveillance, remotely piloted aircraft, air-control, and expeditionary support missions.
Last updated August 31, 2026
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Overview
The 451st Air Expeditionary Group was a provisional United States Air Force organization with a lineage extending from a Second World War heavy-bombardment group through a Cold War strategic missile wing to an expeditionary formation supporting operations in Afghanistan. Although the supplied subject name refers to the 451st Air Expeditionary Wing, the authoritative Wikipedia entity is the 451st Air Expeditionary Group; the wing designation was used only from July 2009 until approximately January 2014. The oldest predecessor was constituted as the 451st Bombardment Group in April 1943 and activated at Davis–Monthan Field, Arizona, on 1 May 1943. Its original squadrons were the 724th, 725th, 726th, and 727th Bombardment Squadrons. The organization trained in the United States with Consolidated B-24 Liberator aircraft before deploying to the Mediterranean theater. Based in Italy, it conducted strategic bombing against oil refineries, rail yards, aircraft factories, airfields, and other targets across Axis-controlled Europe. It received a Distinguished Unit Citation for its attack on the Messerschmitt aircraft factory at Regensburg on 25 February 1944 and additional recognition for missions against Ploesti and the Markersdorf-Haindorf airfield. As the European war progressed, the group also flew air-support, interdiction, supply, and invasion-preparation missions. Its final combat mission took place on 26 April 1945, and the group was inactivated at Dow Field, Maine, on 26 September 1945. A separate lineage was established when the 451st Strategic Missile Wing was organized at Lowry Air Force Base, Colorado, in July 1961. Equipped with HGM-25A Titan I intercontinental ballistic missiles, it assumed assets associated with the inactivating 703d Strategic Missile Wing. The 451st became the first fully operational Titan I wing in Strategic Air Command. Its two missile squadrons placed all 18 missiles on alert during 1962. The United States subsequently phased out the first generation of Atlas and Titan I missiles, and the wing was inactivated on 25 June 1965. The Air Force consolidated the bomber-group and missile-wing lineages in 1984. In 2002, the consolidated lineage was redesignated as the provisional 451st Air Expeditionary Group and assigned to Air Combat Command for activation as required. The group operated from Kandahar Airfield, Afghanistan, providing air control in southern Afghanistan, launch-and-recovery support for MQ-1 Predator and MQ-9 Reaper remotely piloted aircraft, combat search-and-rescue employment, airfield defense, intelligence and surveillance, communications, logistics, civil engineering, and other expeditionary functions. As the Kandahar mission expanded, the formation was enlarged and redesignated the 451st Air Expeditionary Wing on 2 July 2009, reporting to the 455th Air Expeditionary Wing at Bagram Air Base and serving as the host unit at Kandahar. The wing included operations, maintenance, mission-support, communications, security, logistics, civil-engineering, reconnaissance, electronic-combat, air-control, airlift, and force-support elements. It was reduced to group status during the Afghanistan drawdown in approximately January 2014. The group was evacuated from Afghanistan during the 2021 withdrawal of United States forces and is described as effectively inactive thereafter. It is therefore best understood not as a commercial brand but as a historical and operational identity used by the United States Air Force.
History
The 451st lineage began during the Second World War. The 451st Bombardment Group was constituted on 6 April 1943 and activated on 1 May at Davis–Monthan Field, Arizona. Its four bombardment squadrons trained at several American bases, including Dyersburg, Wendover, and Fairmont, with the Consolidated B-24 Liberator. The air echelon moved through Lincoln Army Air Field and the Mediterranean ferry route, while the ground echelon sailed from Camp Patrick Henry to the European theater. The group reached Italy in January 1944 and joined the Fifteenth Air Force. It primarily conducted strategic bombing against industrial and transportation targets in Italy and throughout central and southeastern Europe. Its combat record included the Regensburg attack during Big Week on 25 February 1944, for which it received a Distinguished Unit Citation. Further oak-leaf clusters recognized missions against Ploesti oil facilities and marshalling yards on 5 April and against Markersdorf-Haindorf Airfield near Vienna on 23 August. Poor runway conditions at Gioia del Colle caused parts of the group to relocate temporarily to San Pancrazio and Manduria before the organization assembled at Castelluccio. From there it expanded into air-support, interdiction, supply, and invasion-preparation missions, including support associated with Operation Dragoon and the final Allied advance in northern Italy. The last combat mission was flown against marshalling yards at Sachsenburg, Austria, on 26 April 1945. The group returned to the United States and was inactivated at Dow Field, Maine, on 26 September 1945. The missile-era predecessor was the 451st Strategic Missile Wing, established and organized at Lowry Air Force Base in 1961. It took over missiles, personnel, and equipment from the 703d Strategic Missile Wing and operated 18 HGM-25A Titan I missiles in six launch complexes. The wing’s 724th Strategic Missile Squadron became operational in April 1962, followed shortly by the 725th, making the 451st the first fully operational Titan I wing in Strategic Air Command. The first-generation missile force was retired under the Defense Department’s 1964 phase-out decision. All missiles left alert status on 26 March 1965, and the wing was inactivated on 25 June 1965. The Air Force consolidated the bomber and missile lineages in January 1984. The consolidated organization was redesignated as the provisional 451st Air Expeditionary Group in 2002 and assigned to Air Combat Command. Its Afghanistan role was broad: it controlled air operations in the south, supported MQ-1 Predator and MQ-9 Reaper remotely piloted aircraft, employed combat search-and-rescue forces, and provided airfield defense and the communications, engineering, logistics, safety, and force-support functions required at Kandahar. The organization became the 451st Air Expeditionary Wing on 2 July 2009 because of the expanding United States Air Force presence and mission at Kandahar. It included expeditionary operations, maintenance, mission support, reconnaissance, air control, electronic combat, airlift, communications, and security elements, along with tenant units such as RED HORSE, Prime BEEF, and air-support operations formations. The formation returned to group status during the drawdown in approximately January 2014. Its remaining Afghanistan presence ended during the 2021 United States withdrawal. The group is consequently treated as effectively inactive, although its historical lineage connects three distinct eras of American air power: heavy bombardment in Europe, nuclear deterrence during the Cold War, and expeditionary air operations in Afghanistan.
- 2021
Afghanistan deployment ended
[1]The organization was evacuated during the United States withdrawal from Afghanistan and became effectively inactive.
- 2014
Wing downsized to group
[1]The organization returned to group status during the Afghanistan drawdown.
- 2009
Expeditionary wing activated
[1]The group was enlarged and redesignated the 451st Air Expeditionary Wing on 2 July.
- 2002
Expeditionary group activated in Afghanistan
[1]The provisional 451st Air Expeditionary Group was activated for operations centered on Kandahar Airfield.
- 1984
Bomber and missile lineages consolidated
[1]The Air Force consolidated the 451st Bombardment Group and 451st Strategic Missile Wing lineages.
- 1965
Strategic missile wing inactivated
[1]The Titan I force was removed from alert and the wing was inactivated on 25 June.
- 1962
Titan I force reached operational status
[1]The wing placed its Titan I missile squadrons on alert and became the first fully operational Titan I wing in Strategic Air Command.
- 1961
Strategic missile wing organized
[1]The 451st Strategic Missile Wing was organized at Lowry Air Force Base with Titan I missiles.
- 1945
Bomber group inactivated
[1]After returning from Europe, the 451st Bombardment Group was inactivated at Dow Field, Maine, on 26 September.
- 1944
Combat operations began in Italy
[1]The group deployed to Italy and joined the Fifteenth Air Force’s strategic bombing campaign against Axis targets.
Products and positioning
A provisional United States Air Force expeditionary formation organized to integrate combat aviation, remotely piloted aircraft, command and control, intelligence, security, and base-support capabilities in deployed theaters.
Heavy bomber · 1943
Consolidated B-24 Liberator
The 451st Bombardment Group used B-24 Liberator heavy bombers for strategic bombing missions from Italy during the Second World War. Its targets included refineries, rail facilities, aircraft factories, airfields, and other military-industrial sites across occupied and Axis-aligned Europe.
Intercontinental ballistic missile · 1961
HGM-25A Titan I
The 451st Strategic Missile Wing operated 18 Titan I missiles distributed across six launch complexes at Lowry Air Force Base. The system formed the wing’s Cold War nuclear-alert mission until the first-generation Titan I force was retired in 1965.
Remotely piloted aircraft support · 2002
MQ-1 Predator and MQ-9 Reaper operations
In Afghanistan, the group provided launch-and-recovery and associated operational support for MQ-1 Predator and MQ-9 Reaper remotely piloted aircraft. These activities formed part of a wider mission encompassing surveillance, reconnaissance, air control, and expeditionary base operations.
Brand decisions
2021
Withdrawal from AfghanistanOtherBackground
The United States ended its military presence in Afghanistan during the 2020–2021 withdrawal.
Action taken
The group was evacuated from Afghanistan with the broader United States force withdrawal.
Aftermath
The formation became effectively inactive after its final operational deployment.
2014
Reduction from wing to group statusStrategyBackground
The Afghanistan mission was being reduced as part of the United States drawdown.
Action taken
The organization was downsized and redesignated as the 451st Air Expeditionary Group in approximately January 2014.
Aftermath
Several former expeditionary maintenance, mission-support, operations, and rescue components were inactivated or reassigned.
2009
Expansion from group to wingStrategyBackground
The United States Air Force mission at Kandahar expanded in scale and operational requirements.
Action taken
The 451st Air Expeditionary Group was enlarged and redesignated as the 451st Air Expeditionary Wing on 2 July 2009.
Aftermath
The wing became the host organization at Kandahar and integrated a broader set of operations, maintenance, support, and tenant units.
Sources1 sources
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