Clift arrived at 11 Group Pool, St Athan on 24 October 1939 and after converting to Hurricanes, he joined 79 Squadron at Biggin Hill on November 17. On 15 August 1940 Clift claimed a Bf 110 destroyed and on 30 August he shared in the destruction of a He 111.
When he joined 76 Squadron, it was at a time when the Squadron was suffering high casualties and a consequent deterioration in morale among the crews. Cheshire ordered an improvement in the performance of the Halifaxes, which entailed the removal of all weighty non-essential equipment, including the mid-upper and nose gun turrets.
Cooper joined the RAFVR in 1939 as an Airman under training Wireless operator / Air Gunner (747756). Called up on September 1, he joined the 235 Squadron in October. In February he underwent further training, rejoining 235 on August 13 1940.