William "Buffalo Bill" Cody serves as a scout for the United States Army

From 1868 until 1872 Cody was employed as a scout by the United States Army. Part of this time he spent scouting for Indians, and the remainder was spent gathering and killing bison for them and the Kansas Pacific Railroad. In January 1872 Cody was a scout for Grand Duke Alexei Alexandrovich of Russia's highly publicized royal hunt.

http://en.wikipedia.org/wiki/Buffalo_Bill