Army Air Forces Antisubmarine Command (later I Bomber Command)
B-24 Liberator of AAF Antisubmarine Command[a]
Active	1942–1946
Disbanded	8 October 1948
Country	United States
Branch	Army Air Forces
Type	Command
Role	Antisubmarine warfare, then bomber training
Part of	First Air Force
Engagements	American Theater of World War II European Theater
Insignia
Shoulder Sleeve Insigne[b][1]

The Army Air Forces Antisubmarine Command was formed in the fall of 1942 to establish a single command to control antisubmarine warfare (ASW) activities of the Army Air Forces (AAF). It was formed from the resources of I Bomber Command, which had been carrying out the antisubmarine mission in the Atlantic and Caribbean since the Attack on Pearl Harbor due to the lack of long range Naval aviation in that area.

The command's units conducted ASW along the Atlantic and Gulf coasts of the United States, in the Caribbean Sea and in Europe, where it used bases in England and French Morocco. Its operations were marked by disagreements between the AAF and the Navy concerning the conduct of air ASW. In the fall of 1943, the ASW mission was transferred to the Navy and the command became a bomber training unit until it was inactivated in 1946.

Within a day after the declaration of war by the United States the Army Air Forces (AAF) began patrols of both the East and West coasts. Defense plans drawn up before the war began assigned the Navy responsibility for operations beyond the coastline, with Army aircraft serving in a supporting role.^[2] Because naval aviation that could perform long range patrols was nearly non-existent along the Atlantic coast in early 1942, the burden for aerial antisubmarine patrols fell on the AAF, which had available aircraft, but whose crews had not been trained for the mission.^[3]

German Navy submarines began operating in American coastal waters. By March 1942 fifty-three ships had been sunk in the North Atlantic Naval Coastal Frontier. As a result, the Commander of the North Atlantic Naval Coastal Frontier requested the Army's Eastern Defense Command to undertake offshore patrols with all available aircraft. The first patrols were performed by elements of I Bomber Command,^[c] which would be the primary AAF command involved in antisubmarine warfare (ASW) in early 1942, with assistance from I Air Support Command. However, although I Bomber Command was primarily involved in conducting ASW, it was doing so on an emergency basis, and was subject to withdrawal from these duties to perform its primary bombardment function.^[4] It soon became apparent that if the AAF were to continue with the ASW mission, its units would have to be organized under a specially trained and equipped command.^[5]

In May 1942, General Arnold, Commanding General of the AAF, proposed to Admiral King, the Chief of Naval Operations, that the AAF establish a "coastal command", similar to RAF Coastal Command, operating "when necessary, under the proper Naval authority."^[6] That same month saw both a new high in sinkings by U-boats and a shift in their attacks from the Atlantic coast to the Caribbean Sea. In response, the AAF established the Gulf Task Force, with elements of Third Air Force augmenting I Bomber Command, at Miami, Florida^[d] to augment the Gulf Sea Frontier.^[7] The command situation had only worsened, with two air forces, two navy sea frontiers, and two army defense commands, with differing areas of responsibility, all involved in aerial ASW with ad hoc command relations and separate administrative and operational command arrangements.^[8] Later in the month, the War Department requested General Arnold to reorganize I Bomber Command to fulfill the requirements of ASW air operations, either in support of, or in lieu of, naval forces to protect Allied shipping.^[9]

Disagreements between the Army and the Navy over command relationships delayed activation of the command until October 1942. The activation of the single Army Air Forces Antisubmarine Command at New York City to control all Army Air Forces units conducting antisubmarine warfare reflected the Army's desire for a single mobile force.^[1] The command drew its personnel and equipment from I Bomber Command, which was simultaneously inactivated.^[10] In November 1942, the command's units were organized into two wings, reflecting the Navy desire that forces in a sea frontier be unified under a single command.^[11] The 25th Antisubmarine Wing, Located in New York City, was responsible for patrols off the Atlantic Coast, while the 26th Antisubmarine Wing in Miami, Florida conducted operations in the Caribbean and the Gulf of Mexico.^[12][13]

By late 1942, German strategy had shifted to one of defending against planned Allied offensives in Europe and North Africa by striking at their lines of communication, rather than striking merchant shipping wherever it was most vulnerable. As a result, the Kriegsmarine concentrated its U-boats in the northern and eastern Atlantic.^[14] To meet this challenge, the command moved two squadrons to England in November, where they operated with RAF Coastal Command.^[15] The two units were attached to the 1st Antisubmarine Group (Provisional), which became the 2037th Antisubmarine Wing (Provisional).^[16][17] The decision to deploy the squadrons was made quickly and preparations for their reception and the maintenance of their aircraft were almost nonexistent. Lack of hangar space at RAF St Eval forced them to perform major maintenance outside during the winter.^[16]

A deployed squadron was responsible for the first confirmed sinking of an enemy sub by one of the command's aircraft.^[18] Although they did not initially sink a large number of U-boats, their harassing tactics required German subs to adopt evasive tactics and reduced the number and effectiveness of attacks on convoys crossing the Atlantic.^[19] In February 1943, The squadrons participated in Operation Gondola, whose goal was to attack every U-boat traversing the Bay of Biscay at least once.^[20]

The Navy believed that more antisubmarine forces were required to protect convoys in the North Atlantic, where attacks were becoming more concentrated. In March, the 19th Antisubmarine Squadron relocated to CFB Gander in Newfoundland, soon joined by two other squadrons.^[21]

Eventually the command formed two groups in England and Morocco.^[1] In June 1943, the 480th Antisubmarine Group was formed at Craw Field, French Morocco to conduct patrols north and west of Morocco along the Atlantic approaches to the Strait of Gibraltar.^[22] The group was formed with the 1st and 2d Antisubmarine Squadrons, which had moved to Morocco from England.^[16] In July 1943, German submarines concentrated off the coast of Portugal to intercept convoys bound for the Mediterranean Sea. The group damaged and sank several subs, protecting supply lines for Operation Husky, the invasion of Sicily. Portions of the 480th deployed to Sicily to provide coverage for Operation Avalanche, the landings on mainland Italy. In November 1943, the 480th Group returned to the United States. In January 1944, it moved to Clovis Army Air Field, and was reassigned to form cadres for heavy bombardment units being activated by Second Air Force.^[22]

Following the activation of the 480th Group, the 479th Antisubmarine Group was formed at RAF St Eval.^[23] Squadrons from Newfoundland had moved to England to replace those moved to Morocco.^[16] The group conducted patrols over the Bay of Biscay, achieving its greatest success in the first two months it was active. Following this period, German U-boats adopted tactics that kept them submerged in the group's area of operations during daylight hours. The group continued its patrols, occasionally engaging Luftwaffe aircraft until October. It was disbanded in England in November.^[23]

Despite the deployment of command units to Newfoundland, England and Morocco, the majority of the command remained in the United States conducting patrols and covering convoys in an area where the threat of submarine attack had substantially diminished.^[24] The Navy insisted that forces be retained in this area because of the ability of the German submarine force to rapidly shift its forces.^[25] The command's wings were assisted by Navy units and the Civil Air Patrol, but flew the only long range aircraft. Activity in this region was at such a low level that for three months, from December 1942 to February 1943, not a single enemy U-boat was sighted.^[26] An exception was in the waters near Trinidad, where German subs were attacking merchant shipping.^[27] From December 1942, air echelons from various squadrons deployed to Trinidad, where they joined elements of the 25th Bombardment Group, a Sixth Air Force unit, that was also engaged in antisubmarine patrols.^[28] Finally, the 23d Antisubmarine Squadron deployed to Edinburgh Field, Trinidad to defend against this threat and to experiment with its 75mm cannon armed North American B-25 Mitchells.^[29][30]

Disagreements between the AAF and the Navy over command of long range aviation units engaged in antisubmarine warfare and of whether those forces would best be employed (offensively or defensively) continued into 1943, and in June, the AAF agreed that "The Army is prepared to withdraw Army Air Forces from anti-submarine operations at such time as the Navy is ready to take over those duties completely."^[31] In July, plans were made for 77 of the command's Consolidated B-24 Liberators equipped for antisubmarine warfare to be exchanged for an equal number of B-24s assigned to the Navy. Navy squadrons relieved the 479th Group in October, and its personnel and planes were transferred to Eighth Air Force to form a pathfinder unit. By mid November, the 480th Group had been relieved and was on its way back to the US. Its two squadrons were inactivated in October and their personnel assigned elsewhere. The majority of the command's squadrons were redesignated as bombardment squadrons and transferred to Second Air Force, while the 25th and 26th Wings were disbanded.^[12][32]

In August 1943, the command was redesignated I Bomber Command and reassigned to First Air Force. It continued to oversee antisubmarine units in the United States through October 1943 and overseas through December.^[1] It began to train bomber crews in early 1944, when Replacement Training Units^[e] were reassigned to the command from Second Air Force (heavy bombers) and Third Air Force (medium and light bombers). However, the AAF was finding that standard military units, based on relatively inflexible tables of organization, were not well adapted to the training mission. Accordingly, in April 1944, a more functional system was adopted in which each base was organized into a separate numbered Army Air Force Base Unit, that could be adjusted to the proper size for that base's mission.^[33] Using this organization, it continued to train bomber organizations and personnel (at a reduced level after the end of the war) until inactivated in March 1946.^[1]

The command remained inactive until it was disbanded on 8 October 1948.^[1]

• Constituted as the Army Air Forces Antisubmarine Command on 13 October 1942

Activated on 15 October 1942

• Redesignated I Bomber Command on 26 August 1943^[32]

Inactivated on 21 March 1946

• Disbanded on 8 October 1948^[1]

• Army Air Forces, 15 October 1942
• First Air Force, August 1943 – 21 March 1946^[1]

Wings

• 1st Antisubmarine Wing (Provisional) (later 2037th Antisubmarine Wing (Provisional)):^[17] c. December 1942 – c. 21 June 1943^[f]

RAF St Eval, England then Craw Field, French Morocco

• 25th Antisubmarine Wing: 20 November 1942 – 15 October 1943^[12]
• 26th Antisubmarine Wing: 20 November 1942 – 15 October 1943^[13]

Miami, Florida

Groups

Squadrons

Base Units

• New York, New York, 15 October 1942
• Mitchel Field, New York, c. 1 October 1943 – 21 March 1946^[1]

Campaign Streamer	Campaign	Dates	Notes
	Antisubmarine, American Theater	15 October 1942 – 15 October 1943	[1]
	Antisubmarine, EAME Theater	November 1942–1 December 1943	[1]

• B-17 Flying Fortress units of the United States Army Air Forces
• B-24 Liberator units of the United States Army Air Forces

Explanatory notes

Citations

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

• Ferguson, Arthur B. (April 1945). "The Antisubmarine Command, USAF Historical Study No. 107" (PDF). Assistant Chief of Air Staff, Intelligence Historical Division. Retrieved 12 September 2016.
• Goss, William A (1955). "The Organization and its Responsibilities, Chapter 2 The AAF". In Craven, Wesley F; Cate, James L (eds.). The Army Air Forces in World War II. Vol. VI, Men & Planes. Chicago, Illinois: University of Chicago Press. LCCN 48003657. OCLC 704158.
• 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.
• Schoenfeld, Max (1995). Stalking the U-Boat: USAAF Offensive Antisubmarine Operations in World War II. Washington DC: Smithsonian Institution Press. ISBN 978-1-56098-403-0.
• Warnock, Timothy. "The Battle Against the U-Boat in the American Theater" (PDF). Bolling AFB, DC: Air Force History Support Office. Archived from the original (PDF) on 7 March 2014. Retrieved 22 June 2015.

• Williamson, Mitch (14 May 2015). "Army Air Forces (AAF) were in antisubmarine warfare". silentseawolves.com. Retrieved 13 September 2016.
• Sifuentes. "The Limits of Doctrine: The U.S. Army Air Forces Antisubmarine Operations in World War II" (PDF). United States Naval Academy. Retrieved 13 September 2016. (Honors Thesis, title sheet missing)
• "Civil Air Patrol Coastal Patrol Base Locations and Assignments by U.S. Army Air Force Antisubmarine Command" (PDF). Civil Air Patrol National History Program. October 2014. Retrieved 13 September 2016.
• Feinstein, Ethan M. (2013). "Mastering the Patrol: a Look at the Importance of Training For American Pilots in the Battle of the Atlantic". The College of Wooster. Retrieved 13 September 2016.
• Grabowski Jr., LCDR Stanley J. (5 June 1998). "A Comparative Analysis of Land-Based Antisubmarine Warfare Operations in the Atlantic: U.S. Army during World War II and the U.S. Navy During the Cold War" (PDF). Fort Leavenworth, KS: U.S. Army Command and General Staff College. Archived (PDF) from the original on 19 September 2016. Retrieved 22 June 2015.