The following information is based on information from Wikipedia (I’ll update where necessary)
Imjim Barracks: 1977 to 1979
After CFS’s departure, the airfield was used by the Army, and with the arrival of the Royal Irish Rangers Little Rissington became “Imjim Barracks”.
USAF(E) RAF Little Rissington: 1981 to 1993
With the arrival of the United States Air Force in Europe, Little Rissington became the largest military contingency hospital in Europe. The aerodrome was cleared for C-130 Hercules and C5 Galaxies. During the Gulf War, Little Rissington was held on its highest readiness state for several decades as it prepared for casualties. The USAF left Little Rissington in 1993 and it was handed back to the Royal Air Force.