NATO Communications and Information Systems Services Agency and mandate to signals companies (including 1st NATO Signals Battalion at Maastricht, Netherlands); ten Sectors that supported the 10 major headquarters in NATO; and the NATO Communication and Information Systems (CIS) School in Latina, Italy. It appeared in 2011 there was a 3rd NATO Signal Battalion (3NSB), located in Bydgoszcz, Poland, as well as a NATO Signal Regiment. In 2011, NCSA comprised a central headquarters staff co-located with Allied Command Operations at the Supreme Headquarters Allied Powers Europe (SHAPE) in Mons, Belgium; the NATO Signal Regiment in Brunssum, Netherlands, as well as three deployable NATO Signal Battalions; five Sectors and
Supreme Allied Commander the case of the Pacific and South East Asia, the relevant national command authorities of the American Joint Chiefs of Staff or the British Chiefs of Staff Committee had responsibility for the main conduct of the war in the theatre, depending on the Supreme Commander's nationality. General of the Army Dwight D. Eisenhower served in successive Supreme Allied Commander roles. Eisenhower was the Commander-in-Chief, Allied Force for the Mediterranean theatre. Eisenhower then served as Supreme Commander Allied Expeditionary Force (SCAEF) in the European theatre, starting in December 1943 with the creation of the command to execute Operation Overlord and ending