In what ways is Bruno innocent and naive?

Bruno is a young boy, and although he is stuck right in the middle of a Nazi concentration camp, he fails to see the situation around him. This in itself is a perfect example of his naiveness. We see this same innocence when Shmuel tries to tell him he sees all soldiers as bad..... Bruno doesn't understand. His father is a soldier, an important soldier, but Bruno only takes this as a positive sign because it's his father. In essence, outside of being forced to move, Bruno isn't touched by the violence. He isn't hungry or incarcerated, and he views the world through a lens of innocence. He might occasionally question, but he doesn't comprehend the answers.