Terrence J. O'Shaughnessy of the Air Force, the Pentagon, Washington, D.C. 10. June 2000 - April 2001, operations officer, 555th Fighter Squadron, Aviano AB, Italy 11. April 2001 - July 2002, Commander, 510th Fighter Squadron, Aviano AB, Italy 12. August 2002 - June 2003, student, Industrial College of the Armed Forces, National Defense University, Fort Lesley J. McNair, Washington, D.C. 13. June 2003 - August 2004, Chief, Joint Plans and Operations, Supreme Headquarters Allied Powers Europe, Mons, Belgium 14. August 2004 - July 2005, senior special assistant to the Supreme Allied Commander Europe and Commander, U.S. European Command, Supreme Headquarters Allied Powers Europe,
Western Union (alliance) DC. The need to back up the commitments of the North Atlantic Treaty with appropriate political and military structures led to the creation of the North Atlantic Treaty Organisation (NATO). In December 1950, with the appointment of General Eisenhower as the first Supreme Allied Commander Europe (SACEUR), the members of the Treaty of Brussels decided to transfer the headquarters, personnel, and plans of the Western Union Military Organisation (WUDO) to NATO. NATO's Supreme Headquarters Allied Powers Europe (SHAPE) took over responsibility for the defence of Western Europe, while the physical headquarters in Fontainebleau were transformed into NATO's Headquarters, Allied Forces