There are abundant historical examples of Native Americans joining with whites to fight against other tribes. On the northern plains, 700 Yankton, Yanktonai and Lakota people were the first to aid the U.S. Army in an attack on two adjoining Arikara villages in South Dakota in 1823. In 1868, Osage scouts found Cheyenne chief Black Kettle's camp, leading to the Battle of Washita River.