Inciting Event: The Civil War begins.
First Plot Point: Custer graduates and is commissioned.
First Pinch Point: The Union cavalry is nearly defeated at Gettysburg.
Midpoint: Custer is sent to the Dakotas to fight the Sioux.
Second Pinch Point: Chief Crazy Horse escapes the fort.
Third Plot Point: Custer is court-martial end and the treaty with the Sioux is broken.
Climax: Custer and the 7th Cavalry go to battle the Sioux at Little Big Horn.
Climactic Moment: Custer is killed by Crazy Horse.
Resolution: Custer’s widow, acting on his dying wish, gets the treaty reinstated.