Trivia: This movie is based (loosely of course) on an actual Civil War raid led by Colonel Benjamin Grierson. See: "Grierson's Raid: A Cavalry Adventure of the Civil War" by Dee Brown.
Trivia: The attack on John Wayne's troops by the school boys is based on fact, but unlike the film, the troops under the command of Col. Grienison turned and opened fire on them, killing most of them. He then led a charge back to the school and the small town. He killed all the teachers and the rest of the students and then killed all the people in the town. Grant said later he did not know about it until he was President. There is a monument to mark the place of the attack in Georgia.