Except the following is not a movie. It is a two part mini series made in 1991.
Son of the Morning Star is a retelling of Custer's Last Stand - wherein the Battle of Little Bighorn is retold from multiple perspectives, the widow of General Custer, the 7th Cavalry survivors of the massacre and also from the perspective of Kate Bighead, a young Cheyenne woman. It is also the tale of Crazy Horse, who fought in the Battle of Little Bighorn and later surrendered and was killed.
The mini series stars Gary Cole (General Custer), Dean Stockwell (General Philip Sheridan), Rosanna Arquette (Elizabeth Custer), Rodney A. Grant (Crazy Horse), Nick Ramus (Red Cloud), Buffy Sainte-Marie (voice of Kate Bighead), and Floyd Red Crow Westerman (Sitting Bull).