There are so many things wrong with this film. The Indian tribes that fought Custer didn't hang around after the battle. They fled because three columns, under Generals Terry, Crook, and Gibson was coming at them from three different directions. Sitting Bull had his tribe retreat into Canada while the other Indians involved went back to their respective reservations.
Also the Sioux hated Custer, they didn't respect him the way it was shown in this film. "Yellow Hair" was known to the Sioux as a rapist of their women, and a murderer of Sioux women and children. They certainly didn't bury any soldiers after the battle. After they killed Custer and the other soldiers with him, the Sioux mutilated the bodies and left them to rot in the sun. Soldiers from Terry's column buried the soldiers of Custer's command on the battlefield while Custer himself was buried at West Point Cemetery.
Also the Sioux hated Custer, they didn't respect him the way it was shown in this film. "Yellow Hair" was known to the Sioux as a rapist of their women, and a murderer of Sioux women and children. They certainly didn't bury any soldiers after the battle. After they killed Custer and the other soldiers with him, the Sioux mutilated the bodies and left them to rot in the sun. Soldiers from Terry's column buried the soldiers of Custer's command on the battlefield while Custer himself was buried at West Point Cemetery.