On May 25, 1813, the American fleet and the batteries at Fort Niagara across the river began a devastating two-day bombardment of Fort George. On the 27th a large American force was landed and after a brief engagement in which his outnumbered garrison sustained heavy casualties, Brigadier-General John Vincent made an orderly withdrawal towards Burlington. The capture of Fort George left the Americans in control of the Niagara frontier, but Vincent's troops a week later won a decisive victory at Stoney Creek, preventing the Americans from gaining the whole peninsula.