The Garza Revolution, or the Garza War, was an armed conflict fought in the Mexican state of Coahuila and the American state of Texas between 1891 and 1893. It began when the revolutionary Catarino Garza launched a campaign into Mexico from Texas to start an uprising against the dictator Porfirio Diaz. Because of this violation of neutrality, the United States Army became involved and assisted the Mexican Army in tracking down Garza's followers.