Revealing mistake: In the aerial shot approaching the Horse Kings village the banners are flapping the wrong way and the chimney smoke is going into the chimney, instead of out, revealing that it was shown in reverse.
Suggested correction: Which scene is that? I couldn't find it anywhere.
It's the scene where Eowyn exits the door angrily and walks towards the fire circle thinking, in the trailer she's on the left of the screen but in the movie she's on the right.