How many munition factories were there by 1915?

By 1915, the number of munition factories had significantly increased due to the demands of World War I. In Britain alone, there were around 250 munitions factories established to meet the urgent need for weapons and ammunition. Other countries involved in the war also ramped up their production capabilities, resulting in a substantial growth in munition manufacturing facilities worldwide. This expansion was crucial for sustaining military efforts throughout the war.