No. 644 Squadron RAF was a unit in 38 Group of the Royal Air Force during World War II which undertook glider-towing and supply dropping missions as well being employed in the paratroop role.
Operation Varsity. General Aircraft Hamilcars and Airspeed Horsas, flanked by Handley Page Halifax A Mark VII glider tugs of Nos. 298 and 644 Squadrons RAF, lined up and ready for take-off at RAF Woodbridge, Suffolk, March 1945