Driven.

Curtis, Heap Wolves, Comanche, 1872

The hostiles were all residents of the Great Plains; all were mounted, well armed, and driven now by a mixture of vengeance and political desperation. They were Comanches, Kiowas, Arapahoes, Cheyennes, and Western Sioux. For Colonel Mackenzie on the southern plains, Comanches were the obvious target: No tribe in the history of the Spanish, French, Mexican, Texan, and American occupations of this land had ever caused so much havoc and death. None was even a close second.

S.C. Gwynne, from Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, the Most Powerful Indian Tribe in American History