Eulalio Gutiérrez (1881–1939), flanked by Francisco "Pancho" Villa (1878–1923) and Emiliano Zapata (1879–1919). Gutiérrez was appointed provisional President of Mexico by the Convention of Aguascalientes, a move that Venustiano Carranza (1859–1920) found intolerable. In the ensuing war, Obregón fought for Carranza against the convention.