At the top of the ACO structure are the posts of Supreme Allied Commander Europe (SACEUR) supported by the Deputy Supreme Allied Commander Europe (DSACEUR) and the Chief of Staff (COS); all are 4 Star Generals. SACEUR's position is always assigned to the United States of America, while DSACEUR and COS posts are now permanently assigned to the United Kingdom and the Federal Republic of Germany respectively. SACEUR is also the commander of the US European Command (USEUCOM) with its Headquarters located in Stuttgart, Germany.
General Curtis M. Scaparrotti
General Sir James Everard
Lieutenant General Hugues Delort-Laval
Vice Admiral Colin J. Kilrain
Major General Joseph T. Guastella, Jr.
Major General Alfredo Sanz
Major General Jerzy Biziewski
Major General Walter Huhn
Command Sergeant Major Davor Petek
Major General Odd Egil Pedersen