 FAKE: As Théoden, Aragorn and the others ride out of Hornborg at the  end of the battle, when they ride down the "bridge", one of the  computer generated Orcs, on the side of the bridge that is closest  to the camera, goes straight through one of the horses before he is  thrown from the bridge. Also (and conversely), horsemen in the back  of the column slash with their swords at invisible targets.