In the 2005 film Chronicles of Narnia: The Lion, The Witch & The Wardrobe, there is an overhead shot of Aslan's army right before he comes out of his tent the first time. In that shot, there are several examples of what appear to be normal horses kneeling. However, there are no humans in Aslan's army - only centaurs, satyrs, fauns, and various woodland creatures.
Are these horses actually centaurs that were missed in post-production, or were there normal horses in Aslan's army? And if so, who used them as mounts (if anyone did)?
Here's the shot in question: