In April 1915, Villa had suffered his hitherto most devastating defeats in the two battles at Celaya. In another engagement in the first week of June, at the battle of León, Obregón again won decisively against Villa’s Division of the North. Observers noted admiringly that Obregón had studied German techniques in the battles raging in France. The German influence in the Mexican general’s techniques came into the open through a Hearst reporter embedded with the Carranzistas. He handed a report from Captain Juan Rosales, a Carranzista living in El Paso, to the Bureau of Investigations:
Villa went on to fight another day. However, after a series of devastating defeats at the hand of Obregon and with the help of the American government, Villa disbanded the Division of the North in December 1915 and headed into the Sierra Madres. Villa died at the hands of assassins in 1923, likely under orders from then President Obregon. Obregon himself was assassinated in 1928. However, his arm lived on as a relic of the Mexican Revolution until 1989. The New York Times reported on the cremation of the infamous arm: