In 1916, the U. S. was involved in a conflict with Pancho Villa, a Mexican revolutionary. Pancho Villa orchestrated a series of border raids that had the army scrambling. General John “Black Jack” Pershing instituted “maneuver warfare”, which emphasized speed and mobility. He recognized that Harley-Davidson motorcycles would meet these criteria. On March 16, 1916, Harley-Davidson received an order for twelve motorcycles to be sent immediately to the border. A second order came in on March 27. The motorcycles were fitted with sidecar gun carriages that allowed machine guns to be mounted on them. Harley-Davidson went on to have a long partnership with the U.S. military and supplied vehicles during both world wars.