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
Supreme Headquarters Allied Powers Europe in on a reduction to two commands, it was successful in that a European officer was not placed in charge of the new southern command (now Allied Joint Force Command Naples), a move which France and Germany supported. Despite French President Jacques Chirac exchanging letters with Bill Clinton personally over the issue in September–October 1997, the United States stood firm and today an American admiral remains in charge of the Naples command. In addition to the two continental commands AFNORTHWEST covered the United Kingdom and Scandinavia. An early retirement again disrupted the Mons headquarters in 2000 as General Wesley Clark