National Museum of Military History National Military History Museum) - a museum dedicated to military history. Located in Sofia, Bulgaria. Included in the structure of the Ministry of Defense, the museum existed under different names and subordinate to various institutions from August 1, 1914 (in practice from July 4, 1916). It has covered areas of 5,000 square meters. m, open 40,000 square meters. m (of which 500 sq. m. residential) exhibition space, a library and a computer center.