Supreme Headquarters Allied Powers Europe Command Operations has at its disposal standing forces such as: Airlift support for SACEUR's travels is provided by the USAF's 309th Airlift Squadron at Chièvres Air Base, Belgium. In 2012 and 2013, NATO underwent a reorganization of the military command, and the land component commands at Heidelberg and Madrid were deactivated, the maritime component command at Naples was closed and the air component command at Izmir also shut down. Today Allied Command Operations (ACO) is one of the two strategic commands of NATO (the other being Allied Command Transformation (ACT). Under this structure, there are two joint force operational headquarters
United States Army Europe was located in Versailles, France, just outside Paris. As Eisenhower and his staff began to prepare for the occupation of Germany, the ETOUSA headquarters staff moved to Frankfurt, Germany, and co-located with the Supreme Headquarters Allied Expeditionary Forces and the Office of Military Government, United States. ETOUSA was redesignated Headquarters, United States Forces European Theater (HQ USFET) on 1 July 1945, with its headquarters remaining at Frankfurt. At the end of the war, the total U.S. Army strength in Europe was 2.4 million: two Army groups (6th and 12th), five field armies (First, Third, Seventh, Sixth and Ninth), 13 corps