Given the question: Build a movie plot around this: What military branch was Sam a former member of? Army
The answer is:
Set in Kansas during the early 1900s, a teenaged Native American boy (newcomer Winter Fox Frank) is taken from his family and forced to attend a distant Indian "training" school to assimilate into White society. When he escapes to return his family, Sam Franklin (Wes Studi), a bounty hunter of Cherokee descent, is hired to find and return him to the institution. Franklin, a former Indian scout for the U.S. Army, has renounced his Native heritage and has adopted the White Man's way of life, believing it's the only way for Indians to survive. Along the way, a tragic incident spurs Franklins longtime nemesis, the famous Indian Fighter Sheriff Henry McCoy (J. Kenneth Campbell), to pursue both Franklin and the boy.