Battle of Whitestone Hill

The Battle of Whitestone Hill was the culmination of the 1863 operations against the Sioux Indians in Dakota Territory. Brigadier General Alfred Sully attacked a village September 3–5, 1863. The Native Americans in the village included Yanktonai, Santee, and Teton (Lakota) Sioux.
Results.
Ultimately the battle ended in a decisive US victory. Over 300 natives were killed, these included women and children. 20 US soldiers were killed in the conflict.