Supreme Headquarters Allied Powers Europe (SHAPE) is the central command of North Atlantic Treaty Organisation (NATO) military forces. Since 1967 it has been located at Casteau, north of the Belgian city of Mons, but it had previously been located, from 1953, at Rocquencourt, next to Versailles, France. From 1951 to 2003, SHAPE was the headquarters of operational forces in the European theatre (Allied Command Europe, ACE), but since 2003 it has been the headquarters of Allied Command Operations (ACO), controlling all allied operations worldwide.SHAPE retained its traditional name with reference to Europe for legal reasons although the geographical scope of its activities was extended in 2003. At that time, NATO's command in Lisbon, historically part of the Atlantic command, was reassigned to ACO. The commanding officer of Allied Command Operations has also retained the title "Supreme Allied Commander Europe" (SACEUR).