514th Air Defense Group
North American F-86F Sabre, which equipped the group's 18th FIS
Active1944–1946, 1953–1955
Country United States
Branch United States Air Force
RoleAir Defense

The 514th Air Defense Group is a disbanded United States Air Force (USAF) organization. Its last assignment was with the 31st Air Division at Minneapolis-St. Paul International Airport, Minnesota, where it was inactivated on 18 August 1955. The group was originally activated as a support group for the 319th Bombardment Group in Italy at the end of World War II. After the end of combat in Europe, it deployed to Okinawa, where it was inactivated.

The group was activated once again in 1953, when Air Defense Command (ADC) established it as the headquarters for a dispersed fighter-interceptor squadron and the medical, aircraft maintenance, and administrative squadrons supporting it. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 475th Fighter Group in a project that replaced air defense groups commanding fighter squadrons with fighter groups with distinguished records during World War II.


World War II

319th Bomb Group B-26s take off

The group was activated as the 514th Air Service Group in late 1944, absorbing its personnel and equipment from the 306th Service Group[1] as part of a reorganization of Army Air Forces (AAF) support groups in which the AAF replaced service groups that included personnel from other branches of the Army and supported two combat groups with air service groups including only Air Corps units. The group drew its personnel and equipment from the disbanded 306th Service Group[1] The 514th was designed to support a single combat group.[2] Its 940th Air Engineering Squadron provided maintenance that was beyond the capability of the combat group, its 764th Air Materiel Squadron handled all supply matters, and its Headquarters & Base Services Squadron provided other support.[2] The 514th supported the 319th Bombardment Group in Italy, then returned to the United States for transfer to the Pacific Theater.[1] The group sailed from Naples, Italy to Boston, Massachusetts. Upon arrival in the United States members of the group received 30-day leaves, following which the group reassembled in South Carolina.[1]

The 514th staged through Fort Lawton, Washington and the Caroline Islands before arriving on Okinawa.[1] The unit performed same mission on Okinawa as it had in Italy. The group was awarded credit for participation in the Ryukus Campaign.[3] It was disbanded in 1948.[4]

Cold War

F-51D of the 109th Fighter-Interceptor Squadron[a]

The 514th was redesignated as an air defense group, reconstituted and activated at Minneapolis-St Paul International Airport in 1953.[5] with responsibility for air defense from its base in the upper midwestern United States. The group was initially assigned the 18th Fighter-Interceptor Squadron, which was already stationed at Minneapolis-St Paul, where it flew World War II era North American F-51 Mustangs,[6] as its operational component.[7] The 18th had previously been assigned directly to the 31st Air Division. The group replaced the 72d Air Base Squadron as host active duty USAF unit at Minneapolis-St Paul Airport. It was assigned three squadrons to perform its support responsibilities.[8][9]

F-89D as flown by the 337th FIS

The 18th Squadron upgraded to North American F-86 Sabre jet fighters in July 1953,[6] then to a later model F-86 in December.[6] It finally replaced its F-86s with airborne intercept radar equipped and Mighty Mouse rocket armed Northrop F-89 Scorpions in January 1954.[6] In September 1954, the 18th moved to Alaska and was reassigned.[7] A second operational squadron, the 337th Fighter-Interceptor Squadron, had been activated and assigned to the group earlier in 1954.[10] The 337th flew F-89s while assigned to the group.[11] The group inactivated[5] with its mission, personnel and equipment being transferred to the 475th Fighter Group (Air Defense) in 1955[12][13] as part of Air Defense Command's Project Arrow, which was designed to bring back on the active list the fighter units which had compiled memorable records in the two world wars.[14] The group was disbanded once again in 1984.[15]


Activated on 27 December 1944
Inactivated on 4 January 1946
Disbanded on 8 October 1948[4]
Activated on 18 February 1953[5]
Inactivated on 18 August 1955[5]
Disbanded on 27 September 1984[15]





Awards and campaigns

Campaign Streamer Campaign Dates Notes
Streamer without inscription 27 December 1944 – 16 January 1945 514th Air Service Group[3]
Ryukyus July 1945-2 September 1945 514th Air Service Group[3]

See also


Explanatory notes
  1. ^ Aircraft is North American F-51D-25-NT Mustang, serial 44-84857. When the 109th Fighter-Interceptor Squadron was returned to the Air National Guard in December 1952, its F-51 Mustangs were transferred to the 18th, which continued to fly them until equipping with Sabres in 1953. This Mustang was later transferred to the El Salvador Air Force.Baugher, Joe (19 January 2023). "1942 USAF Serial Numbers". Joe Baugher. Retrieved 1 April 2023.
  2. ^ Probably XV Air Force Service Command until January 1945.
  1. ^ a b c d e f g "Abstract, History 514 Air Service Group, Dec 1944 – Jun 1945". Air Force History Index. Retrieved 4 January 2012.
  2. ^ a b Coleman, p. 208
  3. ^ a b c AF Pamphlet 900-2, p 415
  4. ^ a b Department of the Air Force Letter, 322 (AFOOR 887e), 8 October 1948, Subject: Disbandment of Certain Inactive Air Force Units
  5. ^ a b c d e f Cornett & Johnson, p. 82
  6. ^ a b c d e f g h Cornett & Johnson, p.114
  7. ^ a b Maurer, Combat Squadrons, p. 99
  8. ^ a b Cornett & Johnson, p.147
  9. ^ a b See "Abstract, History 514 Infirmary, Jan–Jun 1953". Air Force History Index. Retrieved 20 June 2012.
  10. ^ a b Maurer, Combat Squadrons, p.417
  11. ^ Cornett & Johnson, p. 127
  12. ^ Maurer, Combat Units, p. 349
  13. ^ Robertson, Patsy (24 February 2009). "Factsheet 53 Weapons Evaluation Group (ACC)". Air Force Historical Research Agency. Retrieved 13 September 2018. (formerly 475th Fighter Group)
  14. ^ Buss, Sturm, Volan, & McMullen, p.6
  15. ^ a b Department of the Air Force/MPM Letter 575q, 27 September 1984, Subject: Disbandment of Units
  16. ^ "Factsheet 18 Fighter Squadron". Air Force Historical Research Agency. 4 January 2008. Retrieved 30 November 2016.
  17. ^ "Factsheet 337 Flight Test Squadron". Air Force Historical Research Agency. 7 April 2008. Retrieved 30 November 2016.
  18. ^ "Abstract, History 764 Air Materiel Squadron, Dec 1944 – Jun 1945". Air Force History Index. Retrieved 4 January 2012.


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

Further reading