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 Europe, as well as smaller commands. From 1993, the staffing of ACE was reduced in line with personnel reductions already in progress since 1990 and the Schaefer Plan, drafted by retired German general Shaefer. Shaefer's aim was to begin the first effort to streamline NATO's Cold War structure to meet the new circumstances. Personnel in the headquarters fell from 18,354 in 1990 to 12,919 in 1996. Costs fell from US $621m to $482m over the same period. From 1994-c.1999, there were three Major Subordinate Commands in ACE: Allied Forces Northwestern Europe at RAF High Wycombe, Allied Forces Central Europe at