 Complete the following phrase:  Wheeler was commissioned as a second lieutet on probation on the General List of the Territorial Army on 13 December 1963 and, following his graduation from University, promoted to lieutet in the Royal Ulster Rifles on 14 July 1964. He spent his early military service in Borneo and in the Middle East. He was promoted to captain on 22 December 1967 and to major on 31 December 1973 and served as a brigade major during the 