This book was okay...definitely geared towards teenage boys. I think I would have really enjoyed this if I had read it as a kid, but now it's just sort of...meh. I didn't really find the plot all that interesting. I mean, hasn't the WWII thing been done like a million times already? Actually, now that I think about it, this book would probably make a good TV show for kids. Kind of like Sliders, without the alternate dimensions.