The Mexican Border War (1910–1919) was a series of military conflicts and cross-border tensions tied to the Mexican Revolution, involving raids, banditry, and U.S. military responses along the U.S.–Mexico border. The most notable incident was Pancho Villa’s 1916 raid on Columbus, New Mexico, which prompted the United States to launch the Punitive Expedition under General John J. Pershing into northern Mexico in an unsuccessful attempt to capture him. In addition to expeditionary operations, U.S. forces conducted border security missions to prevent further incursions and maintain stability. The conflict tested U.S. military readiness and provided valuable experience in mobilization, logistics, and modern warfare just prior to America’s entry into World War I.