Following their victory in the war, the British took over the fort and maintained it for the fur trade. During the American Revolutionary War, they used it to supply their American Indian allies against the rebellious Continentals. The Spanish raided the fort in 1781 and briefly claimed it and the St. Joseph River as their territory. The British maintained the fort until after the United States victory in the Northwest Indian War and the signing of Jay's Treaty in 1795. This settled the northern border. After the British abandoned the fort, it fell into ruin and was overtaken by forest.