Although Custer is referred to as a general, post-1866 his rank was Lieutenant Colonel. He received "brevet" promotion to Lt. General and upon the end of the war was permanently promoted to Major General in the Volunteer Army, but was mustered out of that in 1866. When transferring to the cavalry his rank was set as Lt. Col. The uniform he typically wore while in the cavalry was not the blue uniform commonly seen in TV, but wore more of a Buffalo Bill style attire.
When Custer was killed at the Battle of Little Bighorn in 1876, the Sioux indians cut off his ears so that he could listen better in the next life.
Larry Sellars who plays Cloud Dancing turned down a role in the movie Dances with Wolves because an agreement could not be reached that allowed him 4 days off to attend Sundance Ceremony in South Dakota.
Hank reveals a tender side. He offers Brian a chance to go home and not do chores.
The corral that the soldiers use for the Indians is easy to escape.