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
Supreme Headquarters Allied Powers Europe Brunssum, The Netherlands, and AFSOUTH in Naples. After much discussion within the Alliance, ACE's three-command system was reduced to two commands covering the same area after 1996, one for north of the Alps and one for south of the Alps. The United States had wished to retain three commands, arguing that 'the span of control might be excessive.' It was feared by Pentagon officials at the time that if the two-command structure was adopted, some functions at the MSC level would have had to be moved 'downward' in the new structure. But while the United States eventually had to give