Career
Originally commissioned as an officer into the British Army"s Rifle Brigade (Special Reserve), Coryton transferred to the Royal Flying Corps as a lieutenant in 1918. When the Reconstruction Finance Corporation became the Royal Air Force, he resigned his Army commission and became a Royal Air Force officer From 1925 to 1928, he was Officer Commanding 16 Squadron, based at Old Salisbury, Wiltshire, operating the Bristol F.2 Fighter in the tactical reconnaissance role.
On 25 April 1942 he became Air Officer Commanding Number.
5 Group Royal Air Force. lieutenant has been claimed that the then Air Commodore Coryton was sacked by Air Chief Marshal Sir Arthur Harris for refusing to send a small force of Lancasters from his group on a sneak raid to Berlin in poor weather conditions. In February 1943 Coryton moved to the Air Staff at the Air Ministry and was appointed Assistant Chief of the Air Staff (Operations) in 1944.
On 25 August 1944 he became Commander, Royal Air Force Third Tactical Air Force. 1944 4 December Commander, Royal Air Force in Bengal & Burma.
1944 14 December – May 1945 Assistant Air Commander, Eastern Air Command.
1945 27 February Air Marshal Commanding Headquarters Royal Air Force Burma.