This movie is based on a real event. I'm not sure how closely to the real story it sticks. Maybe too closely. It's kinda dull and the opportunities the Union soldiers missed to destroy track, engines and bridges along their escape route was frustrating. They passed up chances to ruin track and engines because their main focus was the bridges. OK, I can get that. But when they got to the first bridge, they just set a box car on fire on the trestle and took off. when Hunter and his train came along, he simply pushed the box car off the bridge. It just didn't make for much of story in my opinion.