17 december 1932: Pilot Officer
17 juni 1934: Flying Officer
1 oktober 1936: Flight Lieutenant
1 april 1939: Squadron Leader
1941: Acting Wing Commander
1943: Acting Group Captain
1 maart 1944: Temporary Wing Commander
1 juli 1944: Temporary Group Captain
1 oktober 1946: Wing Commander
1 juli 1950: Group Captain
22 juli 1955: Acting Air Commodore
1 juli 1956: Air Commodore
1943: Deputy Director of Armament Requirement
1948: Deputy Director of Weapons
1955: Director of Operational Requirements
1959: Director of Guided Weapons (Trials)
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