From Wikipedia: "The Battle of Oriskany (/ɔːrˈɪskəniː/ or /əˈrɪskəniː/) was a major engagement of the Saratoga campaign during the American Revolutionary War. On August 6, 1777, an American column of Tryon County militia and Oneidas marching to relieve the siege of Fort Stanwix was ambushed by a contingent of Britain's Indigenous allies and Loyalists… The Americans suffered heavy casualties during the battle… Most of [Lieutenant Colonel Sir John] Johnson's force were Mohawk, Seneca, Cayuga, Onondaga, and Mississauga warriors led by Sayenqueraghta, Cornplanter, and Joseph Brant (Thayendanegea)... The British[-Indigenous] victory cost the Americans around 465 dead, wounded, or captured, while Johnson's force suffered only 93 men killed, wounded, or captured. Herkimer was also mortally wounded… The battle also marked the beginning of a civil war among the Haudenosaunee, as Oneida warriors under Louis Cook and Han Yerry aligned with the Patriot cause, as did the Tuscarora. As the Mohawk, Seneca, Cayuga, and Onondaga were allied to the Loyalist cause, this resulted in incidents of armed conflict between the two factions. The battle's location is known in Haudenosaunee oral histories as ‘A Place of Great Sadness’, and has been designated as a National Historic Landmark along with being marked by a monument at the Oriskany Battlefield State Historic Site."