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331st Bombardment Group | |
---|---|
Active | 1942–1944; 1944–1946 |
Country | United States |
Branch | United States Air Force |
Role | Bombardment |
Part of | Twentieth Air Force |
Engagements | Pacific Ocean Theater of World War II |
Insignia | |
331st Bombardment Group emblem approved 22 December 1942) [1] |
The 331st Bombardment Group is an inactive United States Air Force unit. It was last assigned to the 315th Bombardment Wing, being stationed at Northwest Field, Guam. It was inactivated on 15 April 1946.
During World War II, the unit was initially a B-17 Flying Fortress and B-24 Liberator operational training unit (OTU). Redesignated as a replacement training unit (RTU) in December 1943. Inactivated on 1 April 1944 when Second Air Force switched to B-29 Superfortress training. Late in the war the group was reactivated and trained as a Very Heavy (VH) B-29 Superfortress group The group served in the Pacific Ocean theater of World War II as part of Twentieth Air Force. The 331st Bomb Group's aircraft engaged in very heavy bombardment B-29 Superfortress operations against Japan.
The 331st Bombardment Group was first activated in July 1942 at Salt Lake City Army Air Base, Utah with the 461st, 462d, 463d and 464th Bombardment Squadrons assigned. In September it moved to Casper Army Air Field, where it conducted Boeing B-17 Flying Fortress replacement training until 1943, when it converted to the Consolidated B-24 Liberator. Replacement training units were oversized units which trained aircrews prior to their deployment to combat theaters. [2] However, the Army Air Forces found that standard military units, based on relatively inflexible tables of organization, were not proving to be well adapted to the training mission. Accordingly, it adopted a more functional system in which each base was organized into a separate numbered unit, [3] while the groups and squadrons acting as replacement training units were disbanded or inactivated. [4] This resulted in the 331st, along with other units at Casper, being inactivated in the spring of 1944 and being replaced by the 211th AAF Base Unit (Combat Crew Training Station, Heavy), which assumed the 331st Group's mission, personnel, and equipment. [1] [5] [6] [7] [8]
Redesignated 331st Bombardment Group (Very Heavy). Activated on 12 July 1944 at Dalhart AAFld, Texas. Assigned to Second Air Force. Trained for combat with B-29B's initially at Dalhart, then to McCook AAFld, Nebraska.
The 331st was assigned the B-29B model. This model was built at Bell-Atlanta. The B-29B was a limited production aircraft, built solely by Bell-Atlanta. It had all but the tail defensive armament removed, since experience had shown that by 1944 the only significant Japanese fighter attacks were coming from the rear. The tail gun was aimed and fired automatically by the new AN/APG-15B radar fire control system that detected the approaching enemy plane and made all the necessary calculations. The elimination of the turrets and the associated General Electric computerized gun system increased the top speed of the Superfortress to 364 mph at 25,000 feet and made the B-29B suitable for fast, unescorted hit-and-run bombing raids and photographic missions.
Moved to Northwest Field, Guam, April–June 1945, and assigned to the 315th Bomb Wing, Twentieth Air Force. Bombed Japanese-held Truk late in June 1945. Flew first mission against the Japanese home islands on 9 July 1945 and afterward operated principally against the enemy's petroleum industry on Honshū. Despite the hazards of bad weather, fighter attacks, and heavy flak, the 331st bombed the coal liquefaction plant at Ube, the Mitsubishi-Hayama petroleum complex at Kawasaki, and the oil refinery and storage facilities at Shimotsu, in July and August 1945, and received a Distinguished Unit Citation for the missions.
After the war the group dropped food and supplies to Allied prisoners of war in Japan. Inactivated on Guam on 15 April 1946.
The unit was reactivated at Randolph AFB, Texas, in 2008 as the 331st Air Expeditionary Group, a special unit formed to support Hurricane Ike relief efforts. Units and personnel assigned to the 331st came from both the active and reserve components of the Air Force and Navy. [9]
The 502d Bombardment Group was a World War II Army Air Forces (AAF) strategic bombardment organization. The unit was one of the last few combat groups formed by the AAF, activating on 1 June 1944. After nearly a year training with Boeing B-29 Superfortress, it moved to Guam in April 1945. It flew its first combat mission on 30 June 1945 and its first strike on the Japanese home islands in July. It was awarded the Distinguished Unit Citation for attacks on the Japanese oil industry between 5 August and 15 August 1945. After V-J Day it flew show of force missions and evacuated prisoners of war. It remained in the Pacific until it was inactivated on 15 April 1946.
The 346th Bombardment Group is a former United States Army Air Forces unit. It was last assigned to the 316th Bombardment Wing at Kadena Airfield, Okinawa, where it was inactivated on 30 June 1946. The group was originally a heavy bomber training unit, but was inactivated in a general reorganization of Army Air Forces training units in 1944. It was reorganized as a Boeing B-29 Superfortress group later that year. It moved to Okinawa in 1945, but arrived too late to participate in combat.
The 382d Bombardment Group is a former United States Army Air Forces unit. It was last stationed at Camp Anza, California, where it was inactivated on 4 January 1946. The group was active from 1942 to 1944 as a heavy bomber training unit. It was reorganized as a very heavy bomber unit and trained for deployment overseas. However, it arrived at its overseas station too late to see combat, and returned to the United States, where it was inactivated.
The 383d Bombardment Group is a former United States Army Air Forces unit. It was last stationed at Camp Anza, California, where it was inactivated on 4 January 1946. The group was active from 1942 to 1944 as a heavy bomber training unit. It was reorganized as a very heavy bomber unit and trained for deployment overseas. However, it arrived at its overseas station too late to see combat, and returned to the United States, where it was inactivated.
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The 15th Special Operations Squadron is part of the 1st Special Operations Wing at Hurlburt Field, Florida. It operates Lockheed MC-130J Commando II aircraft in support of special operations.
The 315th Air Division is an inactive United States Air Force formation. Originally designated the 315th Bombardment Wing, it was activated in July 1944 at Peterson Field, Colorado as a command organization for four very heavy Boeing B-29 Superfortress bombardment groups. It supervised the 16th, 331st, 501st and 502nd Bombardment Groups in the Mariana Islands during the last stages of the Second World War. Its last assignment was with Pacific Air Forces, based at Tachikawa Air Base, Japan, where the division was inactivated in April 1969.
The 435th Bombardment Squadron, also known as the "Kangaroo" Squadron, is an inactive United States Air Force unit. It was formed in Australia in March 1942 as the 40th Reconnaissance Squadron and participated in combat in the Southwest Pacific Theater until November, when it was withdrawn from combat and returned to the United States, where it acted as a Replacement Training Unit until October 1943, when its personnel and equipment were withdrawn.
The 507th Bombardment Squadron is a former unit of the United States Army Air Forces. It was briefly activated in the spring of 1944, then activated again in the summer as a Boeing B-29 Superfortress unit. It trained for active service during World War II, but moved to its combat station of Kadena Airfield, Okinawa too late in the war to undertake combat missions. It remained on the island until it was inactivated on 28 May 1946.
The 460th Bombardment Squadron was a unit of the United States Army Air Forces. Its last was assigned to the 333d Bombardment Group, stationed at Kadena Air Base, Okinawa. It was inactivated on 28 May 1946.
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The 876th Bombardment Squadron is a former United States Army Air Forces unit. It was an early Boeing B-29 Superfortress unit, but was inactivated in the spring of 1944 when the Army Air Forces reorganized its very heavy bomber units. It was reactivated in August 1944 and deployed to the Pacific in 1945, but arrived too late to see combat. It returned to the United States in December and was inactivated.
The 41st Expeditionary Air Refueling Squadron is a provisional United States Air Force unit. It was last assigned to the 380th Operations Group at Griffiss Air Force Base, New York, where it was inactivated on 15 February 1993.
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The 461st Bombardment Squadron is an inactive United States Air Force unit. Its last assignment was with 346th Bombardment Group at Kadena Airfield, Okinawa, where it was inactivated on 30 June 1946. From 1942 the squadron served as a replacement training unit for heavy bomber aircrews. It was inactivated in the spring of 1944 in a general reorganization of Army Air Forces training units. The squadron was activated again in 1944 as a Boeing B-29 Superfortress unit. Although it deployed to the Pacific, it arrived too late to see combat service.
The 463d Bombardment Squadron is an inactive United States Air Force unit. Its last assignment was with 346th Bombardment Group at Kadena Airfield, Okinawa, where it was inactivated on 30 June 1946. From 1942 the squadron served as a replacement training unit for heavy bomber aircrews. It was inactivated in the spring of 1944 in a general reorganization of Army Air Forces training units. The squadron was activated again in 1944 as a Boeing B-29 Superfortress unit. Although it deployed to the Pacific, it arrived too late to see combat service.
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The 420th Bombardment Squadron was unit in the United States Army Air Forces. Its last assignment was with 382d Bombardment Group stationed at Camp Anza, California. It was inactivated on 4 January 1946 without seeing combat.
This article incorporates public domain material from the Air Force Historical Research Agency