year the 306th assumed as the focal point for all operations in Europe and acted as the SAC liaison with United States Air Forces Europe (USAFE) and European Command. On 1 July 1978, the 306th moved to RAF Mildenhall, United Kingdom and became subordinate to 7th Air Division, which was activated at Ramstein to assume the SAC liaison mission. The wing was assigned the 922d Strategic Squadron at Hellenikon AB, Greece and a month later, the 34th Strategic Squadron at Zaragoza Air Base, Spain. For most of this period the wing operated KC-135s and RC-135s from Mildenhall, Zaragoza, and Hellenikon. In 1985, McDonnell Douglas KC-10A Extender aircraft were assigned to Zaragoza. The 306th supported air refueling requirements for a variety of aircraft in or transiting the European Theater including USAF EC-135s, RC-135s, USAF & NATO E-3As, USAF F-111s, F-4s, C-141s, C-5s, KC-10s, MC-130s, B-52s, B-1s, SR-71s, and RAF Lightning F6 aircraft. The 306 SW operated at Mildenhall until 31 March 1992 when it was inactivated in anticipation of SAC's disestablishment and the transfer of SAC's European assets. The wing's tanker mission transferred to USAFE's 100th Air Refueling Wing, while its air reconnaissance mission and 922d squadron transferred to Air Combat Command's 55th Wing. Lineage Constituted as the 306th Bombardment Wing, Medium on 11 August 1948 Activated on 1 September 1950 Redesignated 306th Bombardment Wing, Heavy on 1 April 1963 Inactivated on 1 July 1974 Redesignated 306th Strategic Wing on 14 August 1976 Activated on 15 August 1976 Inactivated on 31 March 1992 Assignments Second Air Force, 1 September 1950 6th Air Division, 10 February 1951 Attached to: 7th Air Division, 11 June – 7 September 1953 Attached to: 5th Air Division, 5 January – 21 February 1955 and 23 October 1956 – 9 January 1957 Attached to: Sidi Slimane Task Force, 9–15 October 1957 823d Air Division, 6 February 1961 42d Air Division, 30 June 1971 – 1 July 1974 Strategic Air Command, 15 August 1976 7th Air Division, 1 July 1978 Strategic Air Command, 1 February 1992 – 31 March 1992 Components Group 306th Bombardment Group: 1 September 1950 – 16 June 1952 (not operational after 11 February 1951) Squadrons 34th Strategic Squadron: 1 August 1978 – 1 October 1986; 1 August 1990 – 31 March 1992 Zaragoza AB, Spain 305th Air Refueling Squadron: attached 5 January 1954 – 21 February 1955 and c. 20 December 1956 – c.