World War I

Dorand AR.1 with the Air Service in France

The first predecessor of the squadron was activated at Kelly Field, Texas as the 89th Aero Squadron on 19 August 1917.^[2] The men who formed the squadron had been inducted into the Army ten days earlier at Fort Logan, Colorado. After processing, they departed for Kelly and upon arrival, formed the 89th and 88th Aero Squadrons and were trained on assembling new aircraft. The squadron moved to the Aviation Concentration Center at Camp Mills, Garden City, New York in October to prepare for overseas movement.^[4]

The 89th arrived at the 1st Air Depot, American Expeditionary Force at Colombey-les-Belles Airdrome, France on 16 November where it began work on constructing facilities for the depot.^[5] In February 1918, the squadron moved to Châtillon-sur-Seine, where it began work on construction of a flying field for the 2d Corps Aeronautical School. However, the squadron was quartered on a large farm some distance from the flying field, so construction of the field and supporting facilities took a month to complete and training of observers did not begin until May.^[6]

The squadron was assigned the first pilots to arrive at Chatillon and began training observers in artillery adjustment, photography, and gunnery.^[5] A photographic detachment of squadron enlisted men developed the pictures taken by the students at the school.^[6] These men formed the cadre for the 101st Photographic Section later in the year.^[7]

The 89th prepared for combat as an observation unit in July 1918, but never went to front,^[2][5] and in September all pilots assigned to the school were transferred to the headquarters of the Aeronautical School.^[8] The squadron returned to the United States where it was demobilized in 1919.^[2]

In 1936 the 89th was consolidated on the inactive list with the 89th Observation Squadron.^[2]

World War II

Douglas B-18s as flown by the 89th Reconnaissance Squadron

Douglas B-23 Dragon, which replaced the B-18

Doolitte raid

Main article: Doolittle Raid

B-25 taking off for the Doolittle Raid

Planning for a retaliatory bombing raid on Japan began in December 1941, and twenty-four B-25Bs were diverted from the 17th Bombardment Group, which was the only B-25 unit in the Air Corps, and volunteers from its four squadrons, including the 89th, were recruited, the crews being told only that this was a secret and dangerous mission. The volunteers trained at Eglin Field, Florida. Upon completion of training, they left Eglin for McClellan Field, California for final modifications to the B-25s before moving to Naval Air Station Alameda, where the bombers were loaded on the USS Hornet (CV-8) for the raid.^[14]

Combat in the Mediterranean

The remainder of the squadron remained in Columbia, flying antisubmarine patrols until 23 June when it was moved to Barksdale Field, Louisiana. There, the squadron was re-equipped with the Martin B-26 Marauder, and began transition training under Third Air Force.^[15]

Meanwhile, aircrews from the squadron trained with its B-25s at Hurlburt Field, Florida for the Doolittle Raid. Some aircrews from the squadron participated in the raid,^[3] while the balance of the squadron transitioned into Martin B-26 Marauders, and completed training in Louisiana before being deployed to the Mediterranean Theater of Operations shortly following Operation Torch, the North Africa invasion.^[13]

B-26 Marauders of the 432d Bombardment Squadron over Algeria

During December 1942 the squadron became part of XII Bomber Command. It engaged in combat operations over North Africa supporting American and later Allied ground forces in Tunisia. The unit flew interdiction and close air support, bombing bridges, rail lines, marshalling yards, harbors, shipping, gun emplacements, troop concentrations and other enemy targets, helping defeat Axis forces in North Africa.^[13]

During 1943, the 432d participated in Operation Corkscrew, the reduction of Pantelleria. It supported Operation Husky, the Allied invasion of Sicily and Operation Avalanche, the invasion of Italy. During the drive toward Rome, the squadron was awarded a Distinguished Unit Citation for its attacks on airfields near Rome on 13 January 1944. It was also awarded the French Croix de Guerre with Palm for its operations in Italy between April and June.^[13]

The unit provided tactical air support in the liberation of Sardinia and Corsica. From airfields in Corsica, the 432d supported Allied ground forces during Operation Dragoon, the invasion of southern France in August 1944. It moved to Southern France and bombed enemy targets during the Allied drive northward. It earned a second Distinguished Unit Citation for bombing attacks on enemy defenses near Schweinfurt, Germany just before the end of the war on 10 April 1945.^[13]

The squadron remained in Europe after V-E Day. It became part of the occupation forces, and participated in the disarmament of Germany.^[13] It was assigned to the American Occupation Zone in Austria.^[2] The squadron returned to France to stage for its return to the United States, where it was inactivated in late November 1945.^[13]

Remotely piloted aircraft operations

The squadron was activated in October 2011 at Ellsworth Air Force Base, South Dakota^[16] as an MQ-9 Reaper squadron and assigned to the 28th Operations Group.^[3] The squadron replaced Detachment 1, 28th Operations Group, which had been activated in April 2011 to act as the lead organization to prepare Ellsworth for the activation of the remotely piloted aircraft unit.^[1] The squadron was reassigned from the 28th to the 432d Operations Group in October 2015 when the 28th Bomb Wing was reassigned to Air Force Global Strike Command. The following June, the squadron returned to its original number and became the 89th Attack Squadron.^[17]

In March 2019, the squadron was reassigned to the 25th Attack Group, located at Shaw Air Force Base, South Carolina.^[11] In May 2022, the squadron was recognized by General Atomics Aeronautical Systems as the MQ-9 Squadron of the Year for 2021. That year, the squadron provided protection to American and coalition forces across multiple combatant commands and other Department of Defense and government organizations. The squadron achieved the first network accredited MQ-9A simulator, integrating in joint exercises with twelve nations across three combatant commands. Its intelligence flight was also named Twelfth Air Force Intelligence Agency Team of the Year.^[18]

Assignments

• Unknown, 19 August 1917 – November 1917^{[lower-alpha 3]}
• 1st Air Depot, c. 6 November 1917
• 2d Corps Aeronautical School, c. 17 February 1918 – c. 12 January 1919
• Unknown January – 19 May 1919
• Air Force Combat Command, 1 February 1940 (attached to 17th Bombardment Group)
• Northwest Air District (later 2d Air Force), June 1940 (remained attached to 17th Bombardment Group)
• 17th Bombardment Group, 25 February 1942 – 26 November 1945
• Pacific Air Forces, to activate or inactivate any time between 16 January 2002 and 16 February 2007
• 28th Operations Group: 1 October 2011 – 30 September 2015
• 432d Operations Group, 1 October 2015
• 25th Attack Group, 22 March 2019 – present^[11]

Stations

Aircraft

Awards and Campaigns

Award streamer	Award	Dates	Notes
	Distinguished Unit Citation	13 January 1944, Italy	432d Bombardment Squadron[2]
	Distinguished Unit Citation	10 April 1945 Schweinfurt	432d Bombardment Squadron[2]
	Air Force Meritorious Unit Award	1 May 2012-31 May 2013	432d Attack Squadron[11]
	Air Force Meritorious Unit Award	1 June 2017-31 May 2018	89th Attack Squadron[11]
	Air Force Meritorious Unit Award	1 June 2018-31 May 2020	89th Attack Squadron[11]
	Air Force Outstanding Unit Award	1 June 2013-31 May 2014	432d Attack Squadron[11]
	Air Force Outstanding Unit Award	1 June 2019-31 May 2021	89th Attack Squadron[11]
	French Croix de Guerre with Palm	April, May and June 1944	432d Bombardment Squadron[2]

Campaign Streamer	Campaign	Dates	Notes
	Theater of Operations	16 November 1917 – 1919	89th Aero Squadron[2]
	Antisubmarine	7 December 1941 – 22 June 1942	89th Reconnaissance Squadron (Later 432d Bombardment Squadron)[2]
	Tunisia	22 December 1942 – 13 May 1943	432d Bombardment Squadron[2]
	Sicily	14 May 1943 – 17 August 1943	432d Bombardment Squadron[2]
	Naples-Foggia	18 August 1943 – 21 January 1944	432d Bombardment Squadron[2]
	Anzio	22 January 1944 – 24 May 1944	432d Bombardment Squadron[2]
	Rome-Arno	22 January 1944 – 9 September 1944	432d Bombardment Squadron[2]
	Southern France	15 August 1944 – 14 September 1944	432d Bombardment Squadron[2]
	North Apennines	10 September 1944 – 4 April 1945	432d Bombardment Squadron[2]
	Rhineland	15 September 1944 – 21 March 1945	432d Bombardment Squadron[2]
	Central Europe	22 March 1944 – 21 May 1945	432d Bombardment Squadron[2]
	Air Combat, EAME Theater	7 December 1941 – 11 May 1945	432d Bombardment Squadron[2]
	World War II Army of Occupation	9 May 1945 – 3 October 1945	432d Bombardment Squadron[2]

Notes

Explanatory notes

Citations

Bibliography

 This article incorporates public domain material from the Air Force Historical Research Agency

• Clay, Steven E. (2011). US Army Order of Battle 1919–1941 (PDF). Vol. 3 The Services: Air Service, Engineers, and Special Troops 1919–1941. Fort Leavenworth, KS: Combat Studies Institute Press. ISBN 978-0-98419-014-0. LCCN 2010022326. OCLC 637712205. Archived from the original (PDF) on 2013-09-27. Retrieved October 16, 2012.
• Gorrell, Col. Edgar S. (1974). History of the American Expeditionary Forces Air Service, 1917–1919. Vol. 9. Washington, DC: National Archives and Records Service, General Services Administration. OCLC 215070705.
• Maurer, Maurer, ed. (1983) [1961]. Air Force Combat Units of World War II (PDF) (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-912799-02-1. LCCN 61060979.
• Maurer, Maurer, ed. (1982) [1969]. Combat Squadrons of the Air Force, World War II (PDF) (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-405-12194-6. LCCN 70605402. OCLC 72556.
• Wurzburg, Lt. Donald B., ed. (1919). The "Battle of Chatillon": A Graphic History of the Second Corps Aeronautical School, American Expeditionary Forces, France. Grand Rapids, MI: The Dean Hicks Co.