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575th Air Defense Group Airdefensecommand-logo.jpg
13th Fighter-Interceptor Squadron North American F-86D-35-NA Sabre 51-8437.jpg
F-86D of the 575th Air Defense Group's 13th FIS in 1953
Active 1946-1947, 1953–1955
Country  United States
Branch  United States Air Force
Type Fighter Interceptor
Role Air Defense
Part of Air Defense Command

The 575th Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 4708th Air Defense Wing at Selfridge Air Force Base, Michigan, where it was inactivated in 1955. The group was originally activated as a support unit for the 4th Fighter Group after the 4th returned to the US at the end of World War II and performed that mission until it was inactivated in 1947. The group was activated once again in 1952 to replace the support elements of the inactivating 56th Fighter-Interceptor Wing. A year later ADC established it as an operational headquarters for fighter-interceptor squadrons as well. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 1st Fighter Group in a project that replaced air defense groups commanding fighter squadrons with fighter groups with distinguished records during World War II.


Strategic Air Command

The group was activated in 1946 as the 575th Air Service Group to support the 4th Fighter Group[1] at Selfridge Field, MI. Its 1044th Air Engineering Squadron provided maintenance that was beyond the capability of the fighter group, its 1054th Air Materiel Squadron handled all supply matters, and its Headquarters & Base Services Squadron provided other support.[2] The group transferred on paper to Andrews Field, MD, where it was inactivated in 1947.[3] It was disbanded in 1948.[4]

Air Defense Command

The group was reconstituted, redesignated as the 575th Air Base Group, and activated at Selfridge AFB in 1952[5] in a major reorganization of Air Defense Command (ADC) responding to ADC's difficulty under the existing wing base organizational structure in deploying fighter squadrons to best advantage.[6] It replaced the 56th Air Base Group as the USAF host unit for Selfridge. The group was assigned seven squadrons to perform its support responsibilities.[7][8][9][10][11] It also maintained aircraft stationed at Selfridge.[12] The group was redesignated as the 575th Air Defense Group in 1953[5] and assumed responsibility for air defense of the upper Great Lakes area.[citation needed] It was assigned the 56th Fighter-Interceptor Squadron (FIS), flying F-86 Sabre aircraft[13] 61st FIS, flying F-94 Starfire aircraft,[14] and 431st FIS, flying World War II era F-51 Mustang aircraft[15] from the 4708th Defense Wing as its operational elements.[16][17][18] The three squadrons were already stationed at Selfridge.[16][17][18] In May 1953, the 431st FIS converted to Sabres[15] and the following month moved to Libya and was assigned away from the group.[18] Meanwhile, in April 1953, the 13th FIS, flying a newer radar and rocketequipped model of the F-86 aircraft[19] was activated as a fourth operational squadron.[20] In July the 56th FIS upgraded to newer radar equipped "Sabres,"[14] so that when the 61st FIS moved to Newfoundland and was transferred out of the group in August,[17] all squadrons of the 575th were flying the same aircraft, the F-86D, for the first time. In September, the group's medical squadron responsibility expanded when the nearby Percy Jones Army Hospital closed.[21]

The group was inactivated[5] and replaced by 1st Fighter Group (Air Defense) in 1955[22] 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.[23] It was disbanded again in 1984.[24]


  • Constituted as the 575th Air Service Group
Activated ca. 5 September 1946
Inactivated on 15 August 1947
Disbanded on 8 October 1948
  • Reconstituted and redesignated 575th Air Base Group on 1 January 1952
Activated on 1 February 1952
  • Redesignated as 575th Air Defense Group on 16 February 1953
Inactivated on 18 August 1955
Disbanded on 27 September 1984



  • Selfridge Field, Michigan, 5 September 1946 - 26 March 1947
  • Andrews Field, Maryland, 26 March 1947 - 15 August 1947
  • Selfridge AFB, Michigan, 7 February 1952 – 18 August 1955


Operational Squadrons

  • 13th Fighter-Interceptor Squadron, 27 April 1953 – 18 August 1955
  • 56th Fighter-Interceptor Squadron, 16 February 1953 – 18 August 1955
  • 61st Fighter-Interceptor Squadron, 16 February 1953 – 6 August 1953
  • 431st Fighter-Interceptor Squadron, 16 February 1953 – 23 June 1953

Support Squadrons

  • 575th Air Police Squadron, 1 February 1952 - 18 August 1955
  • 575th Food Service Squadron, 1 February 1952 - 18 August 1955[9]
  • 575th Field Maintenance Squadron, 1 February 1952 - 18 August 1955[12]
  • 575th Installations Squadron, 1 February 1952 - 18 August 1955[7]
  • 575th Medical Squadron (later 575th USAF Hospital),[25] 1 February 1952 - 18 August 1955
  • 575th Motor Vehicle Squadron, 1 February 1952 - 18 August 1955[10]
  • 575th Operations Squadron, 1 February 1952 - 18 August 1955[8]
  • 575th Supply Squadron, 1 February 1952 - 18 August 1955[11]
  • 1044th Air Engineering Squadron, ca. 5 September 1946 - 15 August 1947
  • 1054th Air Materiel Squadron, ca. 5 September 1946 - 15 August 1947


  • F-51D, 1953
  • F-86D, 1953–55
  • F-86F, 1953
  • F-94B, 1953

See also



  1. AFHRA Factsheet, 4th Operations Group (accessed 7 Mar 2012)
  2. Coleman, John M (1950). The Development of Tactical Services in the Army Air Forces. New York, NY: Columbia University Press. p. 208. 
  3. Mueller, Robert (1989). Air Force Bases, Vol. I, Active Air Force Bases Within the United States of America on 17 September 1982. Washington, DC: Office of Air Force History. p. 9. ISBN 0-912799-53-6. 
  4. Department of the Air Force Letter, 322 (AFOOR 887e), 8 October 1948, Subject: Disbandment of Certain Inactive Air Force Units
  5. 5.0 5.1 5.2 5.3 Cornett, Lloyd H; Johnson, Mildred W (1980). A Handbook of Aerospace Defense Organization, 1946-1980. Peterson AFB, CO: Office of History, Aerospace Defense Center. pp. 84–85. 
  6. Grant, C.L., The Development of Continental Air Defense to 1 September 1954, (1961), USAF Historical Study No. 126, p. 33
  7. 7.0 7.1 Cornett & Johnson, p. 134
  8. 8.0 8.1 Cornett & Johnson, p. 152
  9. 9.0 9.1 See Abstract, History of 575th Food Service Squadron, Feb-Mar 1952 (accessed 17 June 2012)
  10. 10.0 10.1 See Abstract, History of 575th Motor Vehicle Squadron, Apr-Jun 1952 (accessed 17 June 2012)
  11. 11.0 11.1 See Abstract, History of 575th Supply Squadron, Feb-Jun 1952 (accessed 17 June 2012)
  12. 12.0 12.1 Cornett & Johnson pp.142
  13. Cornett & Johnson, p.116
  14. 14.0 14.1 Cornett & Johnson, p.117
  15. 15.0 15.1 Cornett & Johnson, p.128
  16. 16.0 16.1 Maurer, Maurer, ed (1982) [1969]. Combat Squadrons of the Air Force, World War II (reprint ed.). Washington, DC: Office of Air Force History. p. 227. ISBN 0-405-12194-6. 
  17. 17.0 17.1 17.2 Maurer, Combat Squadrons, p. 237
  18. 18.0 18.1 18.2 Maurer, Combat Squadrons, pp. 532-533
  19. Cornett & Johnson, p.114
  20. Maurer, Combat Squadrons, p.73
  21. Abstract, History of 575th Medical Squadron, Jul-Dec 1953 (accessed 17 June 2012)
  22. Maurer, Maurer, ed (1983) [1961]. Air Force Combat Units of World War II (reprint ed.). Washington, DC: Office of Air Force History. p. 23. ISBN 0-912799-02-1. 
  23. Buss, Lydus H.(ed), Sturm, Thomas A., Volan, Denys, and McMullen, Richard F., History of Continental Air Defense Command and Air Defense Command July to December 1955, Directorate of Historical Services, Air Defense Command, Ent AFB, CO, 1956., p.6
  24. Department of the Air Force/MPM Letter 575q, 27 Sep 1984, Subject: Disbandment of Units
  25. See Abstract, History of 575th USAF Hospitsl, Jan-Jun 1954 (accessed 17 June 2012)


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

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