Conversations From The Living Room, Part 34: Beating a dead War Horse

"OK, so here's another problem with War Horse."
"I'm pretending to be interested."
"The main character?"
"Yeah?"
"It's a horse!"
"And?"
"Well, in a dramatic narrative, you want the main character to go through changes. To be different in the end than in the beginning."
"..."
"And maybe Joey did change from the beginning of the story to the end. But, you know, he's a horse. It's not like he can tell us."
"..."
"And, maybe what he decided was that the Germans had the right idea. He went into the war being pro-English but came out primed to support The Fourth Reich."
"..."
"I mean, Germans saved him a couple of times! The English sent him to charge against machine guns! We could be viewing this movie all wrong: It might be a demonstration of how Nazi horses are made! Wait, where are you going? You can't rule out this exegesis just because it makes you uncomfortable!"
"..."
"Stupid Nazi horses."