I like it, had a few tears cus I could feel the pain and sorrow. It is however mainly about the horse, so it will probably reach out more to those that are into horses/animals. The others may find it plain boring because they would rather see more about the actual war or what ever, not a horse's story. Only parts I didnt like were where the horse showed extreme intelligence/care (like when
he showed the other horse it's ok, and when he took the other horse's place . That's far too unrealistic for my taste). Other than that, it's good.
As mandapuspi mentioned earlier..finally a movie that shows what happens to the horses. In pretty much all other war movies, you just see them lying on the ground dead, being shot, running away with a burning wagon etc. In this, it's a different story.
Watch a different movie if you DONT care about the animals in wars. It's a story about a horse and its owner, simple as that. I think it even said that in the description, so dont be disappointed when it actually is about the horse and its owner.