 In early July 1943 Lawrence went to RAF Duxford for liaison duties with the United States Army Air Forces.flying mainly the Republic P-47 Thunderbolt, the Miles Master and the Piper Cub.On 27 October 1943 he was posted to the Central Gunnery School at RAF Sutton Bridge on the Pilot Gunnery Instructors Training Wing to receive training to become a Spitfire gunnery instructor.