The soldiers did not run around in the fight. They shot their horses to use for cover, while the Indians snuck up through the tall grass and broken ground and fired bullets and arrows into the command.
Captain Myles Keogh was found roughly half a mile away from Custer and his command. He was not with Custer on Last Stand Hill.
General Custer did not wear a Buckskin coat during the battle. He took it off and tied it to the back of his saddle according to multiple witnesses.
There is no evidence that any of the Soldiers wore suspenders. That is a reenactor thing.
Lt. Cooke was not wearing a straw hat. He was wearing either a black or grey hat.
One of the "expert" commenters is a very young PhD candidate from Harvard. Revealing a distinct hole in her presumed expertise, she pronounces the word "cavalry" (horse soldiers) as "calvary" (the place of Christ's martyrdom). This is careless and certainly makes one wonder about a less-than-thorough approach to scholarly studies. It is a mistake commonly made by the uneducated.
There are huge omissions, such as the fact that Custer had two gattling guns that he foolishly left behind and that he had left a third of his command behind a couple of miles away doing nothing. The entire engagement was an exercise in idiocy, egotism, and vanity.
The terrain looks nothing like the actual Little Bighorn Battlefield. There are way too many trees and the ground is too flat.