Question: Who did the warchief Red Cloud defeat in the Powder River War?
Sentence (from "Red Cloud's War"): Red Cloud's War (also referred to as the Bozeman War or the Powder River War) was an armed conflict between the Lakota, Northern Cheyenne, and Northern Arapaho on one side and the United States in Wyoming and Montana territories from 1866 to 1868.
Relevant evidence: Yes