The National Defence University of Warsaw (Polish: Akademia Obrony Narodowej - AON) is the civil-military highest defence academic institution in Poland, located at Rembertów (now part of Warsaw). It was re-established in 1947 as the General Staff Academy and continues traditions of the Szkoła Rycerska ("The School of Knights") founded in 15 March 1765 and other subsequent military schools. Today the National Defence University, subordinate directly to the Polish Ministry of National Education. AON is the alma mater of Polish commanding and staff officers and civilian experts in national and international security matters. It also conducts extensive scientific research on state defence issues, military doctrine, theory of warfare, military art, including military strategy, operational art and tactics, also in the field of national and international security.