The squadron was first activated as the 493d Bombardment Squadron in nonoperational status at Karachi, India, and assigned to the 7th Bombardment Group on 25 Oct 1942. The squadron remained unmanned while the older squadrons of the 7th Group were converting to the Consolidated B-24 Liberator. When the group and squadron moved to Pandaveswar Airfield in early January 1943 it became operational with Liberators. It commenced combat operations on 26 Jan 1943.
The squadron engaged in strategic bombardment operations, attacking communications targets (roads, railroads, etc.) in central and southern Burma, all without fighter escort due to the long distances involved. Primary targets were oil refineries, docks, depots, enemy airfields, marshalling yards, bridges, locomotive repair sheds, naval vessels, and troop concentrations. The 493d moved to Tezgaon Airfield, India, on 17 Jun 1944, and assumed a new mission: transporting high-octane gasoline over the Hump to bases in China. This mission lasted until 5 October, at which time the squadron moved back to Pandaveswar to resume bombing missions. A detachment of the 493rd Squadron operated from Luliang Airfield, China from 17 December 1944 until 26 January 1945, hauling gasoline to Suichwan Airfield, China.
The squadron proper began practice with Azon ("Azimuth only") manual command to line of sight bombs. Apparently the squadron was the only USAAF unit to use this weapon outside of the European Theater of World War II. The Azon bombs were radio controlled and could be steered left or right, although their trajectory could not be changed to shorten or lengthen their flight to target. The Azon trained crews and their B-24s were initially assigned to the 9th Bombardment Squadron. However, in December 1944, the crews and planes were reassigned to the 493d and Azon missions began to be flown. Azon proved effective in attacks against bridges and rail lines. In early 1945 the squadron concentrated on attacks against the Burma-Thailand railroad, the most important line left to the enemy in Burma. On 19 March, the 493d earned a Distinguished Unit Citation for attacks against rail lines and bridges in Thailand. The squadron also dropped propaganda leaflets in Thailand from June through September 1945 for the Office of War Information.
After fighting ended in Burma the 493rd Bomb Squadron was ordered to practice Azon bombing in China, but soon “alerted” for inactivation. With its parent (7th Bomb Group) the 493rd staged through Dudhkundi, Kanchrapara, and Camp Angus (near Calcutta), departing Calcutta aboard the USS General W. M. Black on 7 December 1945. The vessel reached the U.S. on 5 January 1946 and the squadron inactivated at Camp Kilmer, New Jersey, the following day
Activated on 1 Mar 1949 as the 93rd Air Refueling Squadron, Medium, but was not manned until September 1950. Received KB-29P Superfortress tankers, October 1950-Jun 1951. Became combat ready in October 1951. The 93rd ARS deployed to RAF Upper Heyford, England, 6 Dec 1951 – 6 Mar 1952, while the parent wing was at nearby RAF Mildenhall. The squadron supported Operation FOX PETER II, the movement of the 31st Fighter-Escort Wing from the U.S. to Japan, in July 1952 using 11 KB-20Ps at Guam and Kwajalein to refuel some 58 F-84G fighters on their way to the Korean War. The squadron converted from KB-29s to KC-97G Stratotankers in November and December 1953. It undertook several oversea deployments, to Newfoundland, Greenland, French Morocco, and Alaska, in 1954-1956.
The 93rd ARS began training its aircrews to operate KC-135 Stratotankers in May 1957. Began receiving KC-135s on 28 Jun 1957, three days after converting to KC-135 aircrew training as primary mission. Possessed 19 tankers in December 1957 and 39 by May 1958.
Effective 1 Jul 1959, the resources of the 93rd ARS were divided with the 924th ARS, which unit assumed the SAC KC-135 aircrew training mission with 15 aircraft. The 93rd ARS, at the same time, resumed full-time air refueling with 20 KC-135s. This status lasted until 21 Aug 1963, when the 93rd ARS ceased standing alert and prepared to resume full-time KC-135 aircrew training. On the 26th of August the 93rd once again began KC-135 aircrew training as its primary mission. It retained Emergency War Order (EWO) commitments along with its training mission, but did not stand alert.
The squadron’s mission remained basically the same until 31 Mar 1995. Thousands of Strategic Air Command and some Air Mobility Command KC-135 aircrews received flight training from the 93 ARS. Each crew (pilot, copilot, navigator, and boom operator), after academic training with the 4017th Training Squadron at Castle AFB, received 45 days of flight training from the 93rd ARS. The squadron also provided specialized training of shorter duration to senior officers (such as wing commanders). For a period the 93rd ARS also sent instructor teams to locations where Air Force Reserve and Air National Guard units were converting to KC-135 tanker operations to help in-house training programs. On rare occasions the 93rd had deployed some of its aircraft and crews to meet its own EWO commitments or to meet needs exceeding the capability of the 924th ARS. A few such deployments occurred in 1980. With the BRAC-directed closure of Castle AFB, On 31 Mar 1995, the 93 ARS relocated to Fairchild AFB, Washington, and became a deployable air refueling squadron under the 92d Air Refueling Wing (92 ARW).493d Bombardment Squadron
Constituted as the 493 Bombardment Squadron (Heavy) on 19 September 1942
Activated on 25 October 1942
Redesignated 493 Bombardment Squadron
, Heavy on 6 March 1944
Inactivated on 6 January 1946
Consolidated with the 93 Air Refueling Squadron as the 93 Air Refueling Squadron on 19 September 1985
93d Air Refueling Squadron
Constituted as the 93 Air Refueling Squadron
, Medium on 2 February 1949
Activated on 1 March 1949
Redesignated 93 Air Refueling Squadron
, Heavy on 1 February 1955
Redesignated 93 Air Refueling Squadron
on 1 September 1991
Inactivated on 31 March 1995
Consolidated with the 493 Bombardment Squadron on 19 September 1985
Activated on 31 March 1995
7th Bombardment Group, 25 October 1942 – 6 January 1946
93d Bombardment Group, 1 March 1949 (attached to 93d Bombardment Wing, 15 July 1950 - 30 January 1951 and after 10 February 1951
93d Bombardment Wing, 16 June 1952
93d Operations Group, 1 September 1991
398th Operations Group, 1 June 1992 – 31 March 1995
92d Operations Group, 31 March 1995 – Present
Consolidated B-24 Liberator (1943–1945)
Boeing KB-29 Superfortress (1950–1953)
Boeing KC-97 Stratotanker (1953–1957)
Boeing KC-135 Stratotanker (1957–1995, 1995-Present)
World War II
Operation Desert Storm