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 announced that three Italian divisions were to be formed as Italy's 'initial contribution to the Atlantic army', and that these divisions would also come under Eisenhower's control. On April 2, 1951, General Eisenhower signed the activation order for Allied Command Europe and its headquarters at SHAPE. Headquarters, Allied Forces Central Europe (AFCENT) was activated in Fontainebleau, France in 1953. On the same day, ACE's subordinate headquarters in Northern and Central Europe were activated, with the Southern Region following in June. By 1954 ACE's forces consisted of Allied Forces Northern Europe, at Oslo, Allied Forces Central Europe (Fontainebleau), Allied Forces Southern