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
Alfred Gruenther of Staff in 1947-1949. In 1949, he was promoted to the rank of lieutenant general and served as the U.S. Army's deputy chief of staff for plans and operations. In 1951, Gruenther was promoted to four-star general and appointed as the Chief of Staff, Supreme Headquarters Allied Powers Europe (COFS SHAPE) under Gen. Eisenhower, who became the Supreme Allied Commander Europe (SACEUR). He continued to serve under Gen. Matthew Ridgway and later replaced him as SACEUR. From 11 July 1953 to 20 November 1956, he was Supreme Allied Commander, Europe/Commander in Chief, U.S. European Command (SACEUR/USCINCEUR). On December 31, 1956,