After partisan forces arrived in Uzice on September 24, 1941, the pre-war factory for production of arms and ammunition in Krcagovo started its work. In that period it was the only company in that part of occupied Europe which produced arms for the war against fascism.
The machines from one part of the ammunition department and the tool room were located in the underground rooms, built before the Second World War started, and used for needs of the vault of the National bank of the kingdom of Yugoslavia.