the cessation of hostilities, Whitelaw undertook a posting with a movements control unit based around Rabaul, until September 1946 when Whitelaw's commission in the 2nd AIF was terminated and he returned to his job with Spicers in Melbourne. In December 1947, he married Nancy Bogle, and in 1948 he was transferred to Perth. The same year, Australia's part-time military forces were re-raised under the title of the Citizen Military Force, and Whitelaw was appointed to Headquarters Western Command in July 1948 after returning to full-time service. Whitelaw subsequently served in a range of staff positions until his first regimental posting as adjutant of the 1st Field Regiment at Georges Heights in Sydney. In 1955, Whitelaw, then a major, moved with his wife, Nancy and their three young daughters to the Canadian Staff College at Kingston. He was subsequently appointed as the Exchange Instructor in Canada for the following two years. Whitelaw continued to serve in various staff positions, which included: Headquarters Australian Army Force, Far East Land Force in Singapore in 1966 as the assistant adjutant and quartermaster general, and later as deputy commander. He was subsequently posted to Army Headquarters, Canberra as Director Equipment Policy in 1968. Promoted to colonel in 1970, Whitelaw was appointed the Chief of Staff at Headquarters Australian Army Forces Vietnam. For his achievements in this role he was later appointed a Commander of the Order of the British Empire in September 1971, and awarded the United States Bronze Star Medal. After returning to Australia in 1971 Whitelaw was promoted to brigadier and was appointed Director Military Operations and Plans. Following promotion to major general his postings included Chief of Operations and Chief of Personnel. In 1977, Whitelaw assumed the position of Deputy Chief of the General Staff (DCGS) and in June that year was appointed as an Officer of the Order of Australia. He served as DCGS until his retirement in 1978. Retirement In retirement, Whitelaw and his wife continued to reside in Canberra. He subsequently worked on the Council of the National Heart Foundation, as the founding executive director of the National Farmers' Federation and finally with Greening Australia. Meanwhile, he also maintained close ties with veteran and Service organisations, serving as national president of the Regular Defence Force Welfare Association and vice-president of the Australian Veterans and Defence Services Council. He also served as Colonel Commandant of the Royal Regiment of Australian