51st Operations Group
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The 51st Operations Group is the operational flying component of the
United States Air Force The United States Air Force (USAF) is the Aerial warfare, air military branch, service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part ...
51st Fighter Wing The 51st Fighter Wing (51 FW) is a wing of the United States Air Force and the host unit at Osan Air Base, South Korea. The wing has been based entirely in the Far East during its entire existence, including its combat role as the ''51st Fighter ...
, stationed at
Osan Air Base Hanja:) , partof = , location = , nearest_town = Pyeongtaek, Gyeonggi Province , country = South Korea , image = Osan Air Base 51 FW F-16 A-10 Flyby.jpg , alt = US Air Force F-16C Fighting Falcon and A ...
, South Korea. The group was first activated during the buildup for
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
as the 51st Pursuit Group. It was one of the first groups deployed from the United States after the
Attack on Pearl Harbor The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the naval base at Pearl Harbor in Honolulu, Territory of Hawaii ...
, traveling west to India via Australia and Ceylon. It returned to the United States in December 1945 and inactivated. It was quickly reactivated on Okinawa and became part of the occupation forces. Later, during the
Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
, the group's aircraft were some of the first United States Air Force fighters to engage in combat operations over
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its eas ...
, frequently engaging enemy fighters in air-to-air combat.


Overview

The 51st Operations Group is the most forward deployed USAF operations group in the world, providing combat ready aircraft for the close air support, air strike control, counter air, interdiction, theater airlift, and communications in the defense of the Republic of Korea.


Assigned Units

The 51 Operation Group (Tail Code: OS) consists of the following squadrons: *
25th Fighter Squadron The 25th Fighter Squadron is part of the US Air Force's 51st Operations Group, 51st Fighter Wing, at Osan Air Base, South Korea. It operates the Fairchild Republic A-10 Thunderbolt II aircraft conducting close air support missions. Mission ...
"Assam Draggins" (A-10AC) *
36th Fighter Squadron The 36th Fighter Squadron is part of the US Air Force's 51st Operations Group at Osan Air Base, South Korea. It operates the General Dynamics F-16 Fighting Falcon aircraft conducting air superiority missions. The squadron was first activate ...
"Fiends" (Block 40 F-16C/D) * 51st Operations Support Squadron (OSS)


History

: ''For additional history and lineage, see
51st Fighter Wing The 51st Fighter Wing (51 FW) is a wing of the United States Air Force and the host unit at Osan Air Base, South Korea. The wing has been based entirely in the Far East during its entire existence, including its combat role as the ''51st Fighter ...
''


World War II

During 1941, trained in the United States for fighter operations. After the
Pearl Harbor attack The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the naval base at Pearl Harbor in Honolulu, Territory of Hawaii, ...
on 7 December, the 51st served as part of the defense force for the west coast. Operational squadrons of the group were the 16th, 25th, 26th and 449th. The group was deployed to
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
via Australia and Ceylon beginning in January 1942 and arriving in March, serving in the
China Burma India Theater of World War II China Burma India Theater (CBI) was the United States military designation during World War II for the China and Southeast Asian or India–Burma (IBT) theaters. Operational command of Allied forces (including U.S. forces) in the CBI was offi ...
. It was assigned to
Tenth Air Force The Tenth Air Force (10 AF) is a unit of the U.S. Air Force, specifically a numbered air force of the Air Force Reserve Command (AFRC). 10 AF is headquartered at Naval Air Station Fort Worth Joint Reserve Base/Carswell Field (formerly Carswel ...
and equipped with
Curtiss P-40 Warhawk The Curtiss P-40 Warhawk is an American single-engined, single-seat, all-metal fighter and ground-attack aircraft that first flew in 1938. The P-40 design was a modification of the previous Curtiss P-36 Hawk which reduced development time an ...
s and Lockheed P-38 Lightnings. The group defended the Indian terminus of the "Hump" airlift route over the
Himalaya Mountains The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...
between India and China and airfields in that area. The group flew strafing, bombing, reconnaissance, and patrol missions in support of Allied ground troops during a Japanese offensive in northern Burma in 1943. After moving to China in October 1943 the 51st FG was assigned to the 69th Composite Wing of Fourteenth Air Force. The group defended the Chinese end of the Hump route and air bases in the Kunming area. Attacked Japanese shipping in the Red River delta of Indochina and supported Chinese ground forces in their late 1944 drive along the
Salween River , ''Mae Nam Salawin'' ( , name_etymology = , image = Sweet_View_of_Salween_River_in_Tang_Yan_Township,_Shan_State,_Myanmar.jpg , image_size = , image_caption = Salween River in Shan State, Myanmar , map ...
. The group was reequipped with North American P-51D Mustangs in 1945 to defend the eastern end of the route over the Hump, and to guard air bases in the Kunming area. The 51st Fighter Group returned to India in the fall of 1945 and sailed for the United States in November. The group was inactivated on 13 December 1945. The group was reactivated at Yontan Air Base
Okinawa is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi). Naha is the capital and largest city ...
in 1946 and moved to
Naha AB , formally known as the , is an air base of the Japan Air Self-Defense Force formerly under control of the United States Air Force. It is located at Naha Airport on the Oroku Peninsula in Naha, Okinawa, Japan. History Imperial Period Naha ...
when Yontan closed in 1947. The group was assigned to the
Twentieth Air Force The Twentieth Air Force (Air Forces Strategic) (20th AF) is a numbered air force of the United States Air Force Global Strike Command (AFGSC). It is headquartered at Francis E. Warren Air Force Base, Wyoming. 20 AF's primary mission is Interco ...
,
301st Fighter Wing The 301st Fighter Wing (301 FW) is an Air Reserve Component (ARC) of the United States Air Force. It is assigned to the Tenth Air Force, Air Force Reserve Command, stationed at Carswell Field, Naval Air Station Joint Reserve Base Fort Worth, Tex ...
. The group served as part of the occupation force and provided air defense for Okinawa and the
Ryukyu Islands The , also known as the or the , are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ōsumi, Tokara, Amami, Okinawa, and Sakishima Islands (further divided into the Miyako and Yaeyama Islands), with Yona ...
until 1950.


Korean War

With the outbreak of the
Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
in 1950, elements of the 51st were dispatched first to Japan, then to South Korea. It entered combat service flying the
Lockheed F-80C Shooting Star The Lockheed P-80 Shooting Star was the first jet fighter used operationally by the United States Army Air Forces (USAAF) during World War II. Designed and built by Lockheed in 1943 and delivered just 143 days from the start of design, prod ...
on 22 September of that year, when it moved to Itazuke Air Base, Japan to support the breakout of the U.S. Eighth Army from the
Pusan Perimeter The Battle of the Pusan Perimeter ( ko, 부산 교두보 전투) was a large-scale battle between United Nations Command (UN) and North Korean forces lasting from August 4 to September 18, 1950. It was one of the first major engagements of the ...
. For nearly 4 years thereafter, the 51st FIW played a key role in the defense of South Korea despite moving to four different locations within a year and operating under austere conditions. The wing moved to South Korea in October only to return to Japan in December, leaving combat elements behind. In May 1951, the 51st FIW moved to Suwon Air Base, southwest of
Seoul Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 of ...
, but retained maintenance and supply elements at
Tsuiki Air Base is a military aerodrome of the Japan Air Self-Defense Force . It is located in Tsuiki, Fukuoka Prefecture, Japan. History Tsuiki Airfield was originally built by the Imperial Japanese Army Air Force during World War II. The airfield was attack ...
, Japan, to provide rear echelon support. In November 1951 the 51st FIW transitioned to the
North American F-86 Sabre The North American F-86 Sabre, sometimes called the Sabrejet, is a transonic jet fighter aircraft. Produced by North American Aviation, the Sabre is best known as the United States' first swept-wing fighter that could counter the swept-wing ...
with two squadrons (16th, 25th), adding a third squadron (26th) the following May. The group operated a detachment at Suwon AB, Korea, beginning in May 1951, and relocated there in October 1951, with maintenance and supply elements remaining in Japan until August 1954. The wing ceased combat on 27 July 1953. The 51 FIW's war record was impressive. Wing pilots flew more than 45,000 sorties and shot down 312
MiG-15 The Mikoyan-Gurevich MiG-15 (russian: Микоя́н и Гуре́вич МиГ-15; USAF/DoD designation: Type 14; NATO reporting name: Fagot) is a jet fighter aircraft developed by Mikoyan-Gurevich for the Soviet Union. The MiG-15 was one of ...
s; this produced 14 air aces including the top ace of the war, Captain Joseph C. McConnell. The ratio of aerial victories to losses was 10 to 1. Unfortunately, the wing lost 32 pilots to enemy action; however, nine that became prisoners of war were repatriated later.


Cold War

On 1 August 1954, the 51 FIW returned to Naha Air Base to resume air defense coverage of the Ryukyu Islands. Operational squadrons were the 16th, 25th 26th FISs. At the same time, the wing demonstrated its mobility readiness in response to three regional crises. During the period when the 51st was stationed at Naha, Okinawa, it was called upon to fly cover for the National Chinese who were evacuating the mainland. The 25th went to Formosa and flew out of China in the central part of the island and provided assistance to the Seventh Fleet as well as flying recon flights over the mainland of China. The group was inactivated on 25 October 1957 when the group's parent wing adapted the Tri-Deputate organization and the operational fighter squadrons were assigned directly to the wing.


Return to Korea

Since 1990, trained and took part in a series of exercises to maintain combat readiness for the air defense of South Korea.


Lineage

* Established as the 51st Pursuit Group (Interceptor) on 20 November 1940 : Activated on 15 January 1941 : Redesignated 51st Pursuit Group (Fighter) on 12 March 1941 : Redesignated 51st Fighter Group on 15 May 1942 : Inactivated on 13 December 1945 * Activated on 15 October 1946 : Redesignated 51st Fighter-Interceptor Group on 1 February 1950 : Inactivated on 25 October 1957 * Redesignated 51st Tactical Fighter Group on 31 July 1985 (Remained inactive) * Redesignated: 51st Fighter Group on 10 September 1990 : Activated on 1 October 1990 : Redesignated 51st Operations Group on 7 February 1992


Assignments

* Southwest Air District (later 4th Air Force), 15 January 1941 * 9th Pursuit Wing, 2 June 1941 (attached to 4th Air Force until 20 June 1941) * IV Bomber Command, 19 September 1941 – January 1942 (attached to IV Interceptor Command, 14 October 1941-unknown) *
10th Air Force The Tenth Air Force (10 AF) is a unit of the U.S. Air Force, specifically a numbered air force of the Air Force Reserve Command (AFRC). 10 AF is headquartered at Naval Air Station Fort Worth Joint Reserve Base/Carswell Field (formerly Carswell ...
(later Tenth) Air Force), c. 14 March 1942 * Fourteenth Air Force, 12 September 1943 (attached to Tenth Air Force until 1 October 1943) * 69th Bombardment Wing (later 69 Composite Wing), October 1943 * Fourteenth Air Force, 25 August 1945 * Army Air Forces, India-Burma Theater, September–November 1945 * 301st Fighter Wing, 15 October 1946 *
51st Fighter Wing The 51st Fighter Wing (51 FW) is a wing of the United States Air Force and the host unit at Osan Air Base, South Korea. The wing has been based entirely in the Far East during its entire existence, including its combat role as the ''51st Fighter ...
(later 51st Fighter-Interceptor Wing), 18 August 1948 – 25 October 1957 (attached to 8th Fighter-Bomber Wing 26 September-12 October 1950, Detachment 1,
Twentieth Air Force The Twentieth Air Force (Air Forces Strategic) (20th AF) is a numbered air force of the United States Air Force Global Strike Command (AFGSC). It is headquartered at Francis E. Warren Air Force Base, Wyoming. 20 AF's primary mission is Interco ...
16 August 1954 – 1 March 1955, Detachment 1, 313th Air Division, 1–15 March 1955) * 51st Tactical Fighter Wing (later 51st Wing, 51 Fighter Wing), 1 October 1990 – present


Components

*
4th Fighter Squadron The 4th Fighter Squadron, "Fighting Fuujins" is part of the 388th Fighter Wing at Hill Air Force Base, Utah. It operates the Lockheed Martin F-35 Lightning II aircraft, which replaced the unit's General Dynamics F-16 Fighting Falcons in August ...
: attached 20 February 1947 – 20 September 1950 * 16th Pursuit Squadron (later 16th Fighter Squadron, 16th Fighter-Interceptor Squadron): 15 January 1941 – 7 December 1945 (detached July 1942-19 October 1943); 15 October 1946 – 15 October 1957 (detached 3–28 April 1955, 1 June – 1 July 1955, and 1 July-25 October 1957). * 19th Tactical Air Support Squadron: 1 October 1990 – 1 October 1993 * 25th Pursuit Squadron (later 25th Fighter Squadron, 25th Fighter-Interceptor Squadron, 25th Fighter Squadron): 15 January 1941 – 12 December 1945; 15 October 1946 – 25 October 1957 (detached 28 April – 1 June 1955 and 1 July-25 October 1957); 1 October 1993–present * 26th Pursuit Squadron (later 26th Fighter Squadron, 26th Fighter-Interceptor Squadron): 15 January 1941 – 13 December 1945; 15 October 1946 – 1 October 1957 (detached 20 September 1950 – 31 July 1954, 10 November-11 December 1954, and 11 July 1955 – 1 October 1957) * 36th Tactical Fighter Squadron (later 36th Fighter Squadron): 1 October 1990–present *
38th Rescue Squadron The 38th Rescue Squadron (38 RQS) is an active United States Air Force Pararescue squadron. Part of the 347th Rescue Group, 23rd Wing, it is stationed at Moody Air Force Base, Georgia. The squadron flew combat search and rescue missions during ...
(later 38 Rescue Flight): 1 February 1993 – 15 February 1996. * 39th Fighter-Interceptor Squadron: attached 1 June 1952 – 14 July 1954. * 68th Fighter-All Weather Squadron: attached 25 September-9 October 1950 * 80th Fighter-Bomber Squadron: attached 25 September-20 December 1950 * 449th Fighter Squadron: 26 August 1943 – 13 December 1945 (detached 26 August-19 October 1943)


Stations

* Hamilton Field, California, 15 January 1941 *
March Field March is the third month of the year in both the Julian and Gregorian calendars. It is the second of seven months to have a length of 31 days. In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of Ma ...
, California, 20 June 1941 – 11 January 1942 *
Karachi Airport Jinnah International Airport ( ur, جناح بین الاقوامی ہوائی اڈا) , formerly Drigh Road Airport or Karachi Civil Airport, is Pakistan's busiest international and domestic airport, and handled 7,267,582 passengers in 2017 ...
, India, 14 March 1942 *
Dinjan Airfield Dinjan Airfield, also known as Dinjan Air Force Station, is an air base of Indian Air Force. Established as an air field in World War II, it is located in Dinjan, approximately seven miles northeast of Chabua, in the state of Assam, India. The ...
, India, 10 October 1942 * Kunming Airport, China, 2 October 1943 *
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
(Undetermined location), September-16 November 1945 * Fort Lewis, Washington, 12–13 December 1945 *
Yontan Airfield Yontan Airfield (also known as Yomitan Auxiliary Airfield) is a former military airfield located near Yomitan Village on the west coast of Okinawa. It was closed in July 1996 and turned over to the Japanese government in December 2006. Today it i ...
,
Okinawa is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi). Naha is the capital and largest city ...
, 15 October 1946 *
Naha Airfield is a second class airport located west of the city hallAIS Japan
in Itazuke Air Base, Japan, 22 September 1950 *
Kimpo Air Base Gimpo International Airport (), commonly known as Gimpo Airport , formerly rendered in English as Kimpo International Airport, is located in the far western end of Seoul, some west of the Central District of Seoul. Gimpo was the main interna ...
, South Korea, 24 October 1950 * Itazuke Air Base, Japan, 3 January 1951 *
Tsuiki Air Base is a military aerodrome of the Japan Air Self-Defense Force . It is located in Tsuiki, Fukuoka Prefecture, Japan. History Tsuiki Airfield was originally built by the Imperial Japanese Army Air Force during World War II. The airfield was attack ...
, Japan, 22 January 1951 * Suwon Air Base, South Korea, 31 July 1951 * Naha Air Base, Okinawa, 1 August 1954 – 25 October 1957 *
Osan Air Base Hanja:) , partof = , location = , nearest_town = Pyeongtaek, Gyeonggi Province , country = South Korea , image = Osan Air Base 51 FW F-16 A-10 Flyby.jpg , alt = US Air Force F-16C Fighting Falcon and A ...
, South Korea, 1 October 1990–present


Aircraft

* Curtiss P-40 Warhawk, 1941–1945 * Lockheed P-38 Lightning, 1943–1945 * North American P-51 Mustang, 1944–1945 * Republic P-47 Thunderbolt, 1946–1947 * Lockheed F-80 Shooting Star, 1947–1951 *
Northrop F-61 Black Widow The Northrop P-61 Black Widow is a twin-engine United States Army Air Forces fighter aircraft of World War II. It was the first operational U.S. warplane designed as a night fighter, and the first aircraft designed specifically as a night fight ...
, 1947–1950 *
North American F-82 Twin Mustang The North American F-82 Twin Mustang is the last American piston-engined fighter ordered into production by the United States Air Force. Based on the North American P-51 Mustang, the F-82 was originally designed as a long-range escort fighter ...
, 1949–1950 * North American F-86 Sabre, 1951–1957 *
Lockheed F-94 Starfire The Lockheed F-94 Starfire was a first-generation jet powered all-weather, day/night interceptor of the United States Air Force. A twin-seat craft, it was developed from the Lockheed T-33 Shooting Star trainer in the late 1940s. It reached o ...
, 1954 * General Dynamics F-16 Fighting Falcon, 1990 – present * Fairchild Republic OA-10 Thunderbolt II, 1990 – present *
Beechcraft C-12 Huron The Beechcraft C-12 Huron is the military designation for a series of twin-engine turboprop aircraft based on the Beechcraft Super King Air and Beechcraft 1900. C-12 variants are used by the United States Air Force, United States Army, United S ...
, 1992–2007 *
Sikorsky HH-60 Pave Hawk The Sikorsky MH-60G/HH-60G Pave Hawk is a four-blade, twin-engine, medium-lift utility military helicopter manufactured by Sikorsky Aircraft. It is a derivative of the UH-60 Black Hawk and incorporates the US Air Force PAVE electronic systems ...
, 1993–1995 * Fairchild Republic A-10 Thunderbolt II, 1998 – present


References

; Notes ; Citations


Bibliography

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External links



* This article contains information from the
Osan Air Base factsheet
' which is an official document of the United States Government and is presumed to be in the public domain. {{USAAF 4th Air Force World War II 051