On March 15, 1916, Pershing led an expedition into Mexico to capture Pancho Villa. This expedition was ill-equipped and hampered by a lack of supplies due to the breakdown of the Quartermaster Corps. Although there had been talk of war on the border for years, no steps had been taken to provide for the handling of supplies for an expedition. Despite this and other hindrances, such as the lack of aid from the former Mexican government, and their refusal to allow American troops to transport troops and supplies over their railroads, Pershing organized and commanded the Mexican Punitive Expedition, a combined armed force of 10,000 men that penetrated into chaotic Mexico. They routed Villa's revolutionaries, but failed to capture him.