A wrongly convicted ex-cavalry sergeant is transported to prison when he's suddenly thrust into leading a small group of survivors at a besieged fort, where they're vastly outnumbered by hostile Indians and must use their only leverage - holding the son of the Indian chief - to negotiate their escape.
Fort Courageous
A wrongly convicted ex-cavalry sergeant, being transported to prison, finds himself taking charge of a fort's surviving troops under siege by Indians after the commanding officer's death.