"I hope you will not believe all that is said of 'Sully’s Successful Expedition' against the Sioux. I don’t think he ought to brag of it at all, because it was, what no decent man would have done, he pitched into their camp and just slaughtered them, worse a great deal than what the Indians did in 1862, he killed very few men and took no hostile ones prisoners. . .and now he returns saying that we need fear no more, for he has ‘wiped out all hostile Indians from Dakota.’ If he had killed men instead of women & children, then it would have been a success, and the worse of it, they had no hostile intention whatever, the Nebraska 2nd pitched into them without orders, while the Iowa 6th were shaking hands with them on one side, they even shot their own men."
Samuel Brown, a language interpreter during Sully's expedition, 1863
The Battle of Whitestone Hill
Daniels, Arthur M. A Journal of Sibley's Indian Expedition during the Summer of 1863 and Record of the Troops Employed. Minneapolis: J.D. Thueson, 1980.
American Indian Conflicts. South Dakota State Historical Society.