Other mistake: In the party/orgy scene where Aetius is showing off Rome to Attila, one can see a woman with her back to us reveal herself to a man and woman. Despite her veil, one can see her thong underwear. This type of underwear is a 20th century innovation.
Other mistake: In the battle against the Visigoths, just after Aetius has said "sound the second trumpet," some of the soldiers passing by are missing their helmets.
Other mistake: When Aetius and Placidia have discussed how to stop Attila at Orleans, they leave the building. Watch carefully, and you can see that the person who opens the door slams it into the guard standing next to it outside.
