Mezue ahịrịokwu na-esonụ: E buliri ya n'ọkwa onye isi otu oge na 27 Machị 1942. N'ọnwa Eprel afọ 1943, Atcherley ghọrọ onye isi ndị ọrụ ụgbọelu nke No. 211 Group na Tripoli na Libya. N'oge mwakpo nke Sicily (
Operation Husky) na 10 Julaị 1943, No. 211 Group bụ isi ọgụ ike nke Air Vice Marshal Harry Broadhurst's Desert Air Force, a sub-iwu nke Air Marshal Sir Arthur Coningham's Northwest African Tactical Air Force. N'afọ ahụ, e zigara ya n'isi ụlọ ọrụ RAF Fighter Command ma na 1944 ọ kwagara n'isi ụlọ ọrụ Allied Expeditionary Air Force na nkwadebe maka Operation Overlord. Ọ nọrọ oge mmechi nke Agha ahụ dị ka onye isi nke Fighter Leaders 'School na mgbe ahụ dị ka onye isi nke Central Fighter Establishment.