The first predecessor of the squadron, the 34th Air Transport Squadron served on the South Atlantic ferrying route during World War II until it was disbanded in 1943. The squadron was reconstituted as a Military Air Transport Service unit at McChord Air Force Base from 1952 through 1955.
The 34th Air Refueling Squadron served as a refueling and command and control unit with Strategic Air Command from 1957 to 1972. The two squadrons were consolidated into a single unit in 1985.
The first predecessor of the squadron was activated at Ibura Airport, near Recife, Brazil in July 1942 as the 34th Ferrying Squadron, serving with the 9th Ferrying Group on the South Atlantic ferrying route. In March 1943, the group and squadron replaced their "ferrying" designation to "transport." In October 1943, Air Transport Command reorganized its overseas units and the 34th Squadron was disbanded and its personnel and equipment were transferred to Station 10, South Atlantic Wing, Air Transport Command.
In 1961 SAC looked for a practical airborne counterpart to its underground command post starting in July 1960. Five modified Boeing KC-135A Stratotanker aircraft were assigned to the 34th for this mission. One was kept on ground alert at all times. SAC periodically tested the squadron's ability to meet the 15-minute launch window established for these planes. A SAC general officer and a team of controllers were on each flight. The first Operation Looking Glass mission flown by the squadron took off on 3 February 1961. In March 1963, the squadron was equipped with eight specially-configured KC-135As for SAC's command and control mission. These planes were replaced the following August by KC-135B aircraft with turbofan engines and advanced electronics equipment. These aircraft could remain aloft for longer periods because they added receiver capabilities for air refueling operations, retaining their tanker configuration as well. These new aircraft were soon redesignated as Boeing EC-135Cs. In July 1965, these aircraft and their mission were transferred to the 38th Strategic Reconnaissance Squadron.[7][8]
The squadron moved to Pease Air Force Base, New Hampshire on 25 June 1966[9] and flew KC-135 Stratotankers on a worldwide scale and was assigned to the 509th Bombardment Wing until inactivated on 31 March 1976.
On 19 September 1985 the 34th Strategic Squadron was consolidated with the 34th Air Transport Squadron, Heavy, a unit that was last active 1 July 1955.[10]
^ abcDepartment of the Air Force/MPM Letter 662q, 19 September 85, Subject: Reconstitution, Redesignation, and Consolidation of Selected Air Force Tactical Squadrons