With the first world wide war, many new weapons were invented for the battlefield. Learn about the advancement in weapons in this book!

Matt Doeden is a freelance author and editor from Minnesota. He's written numerous children's books on sports, music, current events, the military, extreme survival, and much more. His books Sandy Koufax (Twenty-First Century Books, 2006) and Tom Brady: Unlikely Champion (Twenty-First Century Books, 2011) were Junior Library Guild selections. Doeden began his career as a sports writer before turning to publishing. He lives in Minnesota with his wife and two children.