Supreme Headquarters Allied Powers Europe government offered Camp Casteau, a 2 km² Belgian Army summer training camp near Mons, which was an area in serious need of additional economic investment. In September 1966, NATO agreed that Belgium should host SHAPE at Casteau. SHAPE closed its facility at Rocquencourt near Paris on 30 March 1967, and the next day held a ceremony to mark the opening of the new headquarters at Casteau. The drawdown of the British Mediterranean Fleet, the military difficulties of the politically decided command structure, and the withdrawal of the French from the military command structure forced a rearrangement of the command arrangements
Clarence Dunlap to Europe in 1958, Dunlap was appointed Deputy Chief of Staff (Operations) at Supreme Headquarters Allied Powers Europe (SHAPE). There he wrote and article for the "European-Atlantic Review" about the role of Europe's radar shield. Dunlap was promoted to air marshal and served as Chief of the Air Staff in 1962. His final service appointment was as the Deputy Commander of the North American Aerospace Defense Command (or NORAD) from 1964 to 1967. He retired from RCAF in 1968. In retirement Dunlap worked on a voluntary basis to support the development of the National Aviation Museum in Ottawa. In 1979