Corrected entry: Ten Bears' wife wears an obviously modern day set of dentures. While dentures had been invented by the late 1800's, they certainly weren't that "nice" looking...or available to a plains Indian on the Frontier.
Corrected entry: At the beginning of the movie Lt. Dunbar is waiting to have his foot amputated, but later on in the movie when he's taking a bath in the river, both his legs are fine and there are no injuries.
Corrected entry: In the scene where Kevin Costner is playing with the wolf on the prairie and the Sioux see him doing so. Costner is on the ground when the wolf runs away and the camera cuts to the Sioux coming toward Costner. In the scene of the Sioux approaching him he is seen in the distance standing. The camera returns to a close-up of Costner and he is on the ground again.
Corrected entry: Shortly after Kevin Costner arrives at his deserted post and decides he is tired of waiting for the Indians to come to him, he decides to "ride out and meet them". There is a scene where he is dressing in his uniform to prepare for this visit, where at one point he fastens a roughly 6-inch long (presumably) brass "cover" over the buttons on the front of his uniform. He then uses a rag to shine between the buttons for a moment. This "cover" has disappeared in the next shot when we see Costner fully dressed and walking towards his horse.
Corrected entry: When the Sioux and Dunbar are leaving for the buffalo hunt, one of the young boys riding a horse is wearing a pair of low-cut black converse Allstar sneakers. You can see it as they are riding away from the camera.
Corrected entry: When the Sioux are surrounding the Last Pawnee in the creek, they are in a circle around him and all fire their rifles at the same time. In this situation a few Sioux would have been shot.
Corrected entry: When Lt. Dunbar goes to bed, Cisco the horse is in the corral, unsaddled. When Dunbar wakes up the next morning and says "bad horse," the horse is waiting at the door to the cabin with his saddle and blanket on.
Corrected entry: In one of many 'show the majestic view as they ride' scenes, you can see the cooling tower of a nuclear reactor.
Corrected entry: During the buffalo hunt, Dunbar shoots his rifle several times without ever reloading it. When he shoots at the buffalo charging at Smiles A Lot, Dunbar has to cock his rifle between each shot, yet can fire two shots at the downed buffalo without cocking the rifle between shots.
Corrected entry: In the winter scene you can clearly see that the people have no visible breath, despite there being snow all around.
Corrected entry: A skittish wolf like Two Socks would never position himself so close to an Indian scouting party, as is revealed after he is shot by the soldiers.
Corrected entry: After unloading the supplies at Fort Sedgewick, when Lt. Dunbar hands Timmons a case of supplies just before he leaves, there is only one wagon hitched up. In the following shot Timmons pulls away with two.
Corrected entry: In the beginning, a Civil War battle is taking place at the fictional St. David's field in 1863. The General who tends to Dunbar after the victory is a 3 star Lieutenant General. The only Yankee 3 star general during the Civil War was General Grant and he wasn't promoted to Lt. General until 1864.
Corrected entry: Dunbar washes his face and forehead, (we assume to remove the blood from what appeared to be quit a nasty injury), after being knocked out on the door frame yet, there is no sign of cuts, scrapes or bruising on his forehead.
Corrected entry: When Sergeant Pepper reloads his musket and talks about settling the whole business with high stakes poker, he pours powder down the muzzle and then proceeds to ram the rod down but without having placed any bullet (buckshot) inside the barrel. The purpose of the rod is to ram the buckshot all the way down to get it seated on the powder. (00:07:05)