Duxbury joined the
Royal Air Force in 1953. He became Officer Commanding
No. 201 Squadron in 1971 and station commander of
RAF St Mawgan in 1976. He was appointed secretary to the Chief of Staffs' Committee in 1978, joined the Senior Directing Staff (Air) at the
Royal College of Defence Studies in 1981 and became
Air Secretary in 1982. He served as Air Officer Commanding
No. 18 Group from 1986 and retired in 1990. ==Retirement==