As the battle turned in favor of the Patriots, the Indians retreated down the valley shouting "Oonah, oonah!" and disappeared as quickly as they had appeared, carrying terror to the settlements below. After they left, a detachment of Royal Greens made one final attempt by turning their coats inside out to disguise themselves as a relief party coming up the valley from Fort Stanwix, but a Patriot soldier recognized the face of a Loyalist neighbor and the fighting began again. Six hours after the battle began, both sides gradually withdrew. Although the Tryon County militia never reached Fort Stanwix, Iroquois losses at the Battle Oriskany led them to withdraw their aid to St. Leger. Lacking enough artillery and other resources to continue the siege, St. Leger retreated to Canada, and this prong of the Campaign of 1777 collapsed.