Washington ordered a follow-up expedition led by territorial governor, General Arthur St. Clair. His initial force was roughly the same size as Harmar's, so Congress authorized a second infantry regiment of 2,000 soldiers, but only for six months. St. Clair's total force was only 2,400 and he could not overcome logistics problems, but with the six month levies expiring, he set out in September 1791. This newly recruited and inexperienced force was attacked in camp on the morning of 4 November 1791 by forces of the Western Confederacy led by Little Turtle and Blue Jacket. St. Clair's Defeat remains one of the worst defeats in U.S. Army history, with over half of St. Clair's combined force killed or wounded. Three quarters of the new Second Infantry Regiment, including their commander Richard Butler, were lost, as was all artillery.