Cracker. I picked this book because it looked interesting. And also i like German Shepard. I think the protagonist is America because its a war and that`s the side. The antagonist is the other side of the war so who there fighting. Rick and Cracker need to become friends to be able to get home safely from the war. The theme is to work with others. I think a good part is when Cracker finds booby traps in war because its very interesting. I would rate this book a 8 because its a very good book and doesnt have a lot of uninteresting parts.