This movie is gorgeous, it's not like any of this modern cgi movies, this is deep and reflects the authors surrounding when writing it in the WWII. But the movie is not just based on the book it's take his place in the late 60s so you better not expect a war movie, furthermore it's universal and shows war-machinery very precisely without losing the story. Because it's as viewed as a kid just animals who wants peace against the human kind. So if you just look at the film what it is: A kids movie, it's nearly perfect and if your kids gets bored you see how society turns bad. When I grow up I watch this movie again an fully understands the meanings, but I just watch it because it was enjoyable in the first place. A movie which grows with you.