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 countries, including Poland and the Baltic states. In 2003, a French flag was set up in the SHAPE headquarters in Mons following the return, after almost forty years, of French military officers to the HQ. Fifteen French military officers, including General Jean-Jacques Bart, work there, of a total amount of 1,100 personnel. They are however considered as "inserted," and not as "integrated," as they cannot be ordered to move without previous French approval. A new structure was developed with three main headquarters under Allied Command Operations: Between 2003 and 2006, a new category of forces was created, principally to improve