Men searching for relics at the grounds of Fort Jefferson. Fort Jefferson was built about six miles south of Greenville, Ohio, on the order of General Arthur St. Clair in October 1791. The purpose of the fort was to serve as a supply garrison for St. Clair's campaign against the area’s American Indian population, hence its original name of Fort Deposit. In November 1791, St. Clair attacked the area's tribes, but under the leadership of Shawnee chief Weyapiersenwah (Blue Jacket) and Miami chief Mishikinakwa (Little Turtle), a large alliance of seasoned volunteer warriors from nine different American Indian tribes easily defeated St. Clair and his troops. This loss, which was one of the worst defeats of the American military at the hands o...