The Battle of El Roble was fought on the Itata river, 17 October 1813, between the Chilean patriot general José Miguel Carrera and Spanish royalist forces under the command of Clemente Lantaño and de Luis Urrejola. The surprise patriot victory at El Roble as a result of Bernardo O'Higgins' actions at the end of the day was to result in a change of patriot commander, and a severe split within the patriot movement.