In the Southwest the U.S. Army used Apache scouts to hunt Navajos and other Apaches. To the north the Army used a handful of Lakota scouts, as well as scouts from various friendly tribes—Crow, Pawnee, Shoshone, Arikara—to track down renegade Lakotas and Cheyennes. What do you think of the use of such Indian scouts, and how do you rate their respective performances in the Indian wars?