Villa's dominance in northern Mexico was broken in 1915 through a series of defeats he suffered at Celaya and Agua Prieta at the hands of Álvaro Obregón and Plutarco Elías Calles. After Villa's famous raid on Columbus, New Mexico, in 1916, U.S. Army General John J. Pershing tried unsuccessfully to capture Villa in a nine-month pursuit that ended when the United States entered into World War I and Pershing was called back. Villa retired in 1920 and was given a large estate, which he turned into a "military colony" for his former soldiers so A
