Battery 4 held the rampart's largest gun, a 32-pound naval cannon manned by sailors from the USS Carolina, which had been sunk by British fire on December 27, 1814. During the Battle of New Orleans, this gun tore gaping holes in the ranks of the advancing 93rd (Sutherland Highlanders) Regiment of Foot. To the left, the American line was defended by the 44th U.S. Infantry and militia from Daquin's Second Free Colored Battalion, men who had emigrated from Saint-Domingue because of the Haitian Revolution. To the right, the First Free Colored Battalion was descended from the city's colonial Spanish colored militias.