I saw the move "WarHorse," and I really enjoyed it. Sure - it is not the best movie ever made, and it jumps about a bit, but overall it was very entertaining. I did cry of course, I mean I have a horse so emotional scenes with horses are made for me. Mu husband hated the movie, so you may need to be a horse enthusiast to truly enjoy it.
Joey, the TB in the movie was played by a OTTB that was bred in California. You can read more about him
I was lucky enough to get a Kindle Fire for Christmas, and after seeing the movie I decided that my first Kindle Book should be WarHorse. It is a short book, 18 chapters, and it differs from the movie quite a bit. I think I actually liked the humans better in the book, somehow they were more dimensional and their motivations were clearer. I love that the Germans in the book, and the movie, were portrayed as feeling suffering people, and not the devils we so many times see in WW movies.
Anyway; if you have not seen the movie, I would recommend seeing it in the theatre as the scenes are stunning (it is Spielberg after all), and I also recommend you read the book