 22 Elementary Flying Training School RAF (EFTS) to be prepared for possible anti-invasion duties.Then beginning in October 1940, the airfield was used by 22 EFTS Tiger Moths as an Relief Landing Ground until mid-1941.With the departure of the Tiger Moths, Bottisham was transferred to 241 Sqn Army Co-operation Command with Westland Lysanders, Curtiss Tomahawks, North American Mustang Mk 1's, moved to Ayr.