The Battle of Celaya, which occurred near Celaya, Guanajuato on 13 April 1915, was a battle of the Mexican Revolution. The Conventionist forces under Pancho Villa were badly defeated by forces under the command of Álvaro Obregón, who supported the presidency of Venustiano Carranza. Villa lost around 4,000 men killed in frontal attacks. He also lost 1,000 horses, 5,000 rifles, and 32 cannons. Approximately 6,000 of his men were taken prisoner. Of those captured, 120 of Villa's officers were executed.