Revealing mistake: Towards the beginning of the movie, young Alexander tames a horse and then jumps on the horse and rides off. He is supposed to be riding bareback, but in one of the shots from a distance, you can tell that the actor's feet are in stirrups.
Revealing mistake: In the scene where Alexander sees the dead king Darius and puts his cloak on him, if you look closer, you can see that the character is breathing. Look closely at his belly.
Revealing mistake: When Alexander rides towards the elephant of the Indian King, his sword is obviously waggling and his helmet is bouncing out of shape as though made of rubber.
