This was the primary Japanese intelligence school of World War II.
Nakano Gakko
Rikugun Shikan Gakko
Etajima Gakko
Ashikaga Gakko
Nakano Gakko. Established by Lt. Col. Akikusa Shun at Nakano in January 1938, the school (gakko) focused on intelligence gathering before the war, gradually shifting to sabotage and subversion during the conflict. Some 2,100 students graduated.