In the Indian wars following the U.S. Civil War, the Indian scouts were a fast-moving, aggressive, and knowledgeable asset to the U.S. army. They often proved to be immune to army notions of discipline and demeanor, but they proved expert in traversing the vast distances of the American West and providing intelligence—and often a shock force—to the soldiers who sought hostile Indians. Pawnee Scout leader Luther H. North commented, "Neither the Wild Tribes, nor the Government Indian Scouts ever adopted any of the white soldier's tactics. They thought their own much better." Another chief of scouts, Stanton G. Fisher, emphasized the importance of Indian Scouts by saying of the soldiers, "Uncle Sam's boys are too slow for this business."