The expansion of Flossenbürg concentration camp led to the establishment of subcamps, the first of which was established at Stulln in February 1942 to provide forced labor to a mining company. Many of them were located in the Sudetenland or across the border in the Protectorate of Bohemia and Moravia. The vast majority were established after 1 March 1944. Initially, the subcamps were not involved in armaments production, which changed in the second half of 1944 due to a large influx of available prisoners and the activities of the Jägerstab, which sought to increase German aircraft production. The Jägerstab's dispersal of aircraft production spurred the expansion of the subcamp system in 1944 and resulted in the establishment of the two largest of the subcamps, at and Leitmeritz. In the s