Adrian D'Hague was educated at North Sydney Boy's High and at the Royal Military College Duntroon, where he graduated in Applied Science in 1967. During the Vietnam war, he served in the Australian Army as a platoon commander, and was awarded the Military Cross. In later years he held a number of senior Defence positions. In 1994, he was made a member of the Order of Australia for his services to communications. In 2000, he left the Army to pursue literary and academic interests.