The Kingdom of Prussia's VI Corps, some 12,000 men and their guns, horses, ammunition and other material, was transported on two railway lines to Kraków in 1846. The Prussian Army used railways to move its forces during the First Schleswig War in 1849–1851. Three Prussian battalions were deployed by rail to crush the 1849 May Uprising in Dresden. The first Prussian regulations for transport of troops on state railways were issued in 1856.