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 deployed in Europe. One of the most significant events in the history of Allied Command Europe (ACE) was France's withdrawal from NATO's integrated military structure. This move forced SHAPE and several other ACE headquarters to leave French territory. France's resentment over NATO's military structure had been brewing for a number of years, as successive French governments had become increasingly incensed with Anglo-American domination of the command structure and insufficient French influence. In February 1966 President Charles de Gaulle stated that the changed world order had "stripped NATO of its justification" for military integration, and soon afterward, France stated that it