The Heroica Escuela Naval Militar is the officer training academy of the Mexican Navy. It began operations on 1 June 1897 with a group of cadets from the Army's Colegio Militar who had expressed an interest in training as naval officers. It was originally located on the premises of the military garrison in Veracruz. Its original staff comprised one commandant, two officers, six teachers, and 26 cadets. It was given the appellation Heroica ("Heroic") for its efforts in defending the port during the 1914 United States occupation of Veracruz.