NATO Communications and Information Systems Services Agency Command, Control, Communications, Intelligence, Surveillance and Reconnaissance (C4ISR) capabilities. The Director of NCSA was accountable to NATO's Consultation, Command and Control Board for executing the general policy decisions, directives and strategy associated with providing CIS services throughout NATO. The Director was also accountable to the Supreme Allied Commander Europe (SACEUR) for all operational, or deployed, CIS assets. In 2007, Canadian Forces internet sources said that NCSA comprised a central headquarters staff co-located with Allied Command Operations at the Supreme Headquarters Allied Powers Europe in Mons, Belgium; two deployable NATO Signal Battalions, each with four deployable communication modules, comparable in size
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