Throughout history, states have tried to create the perfect combatant with superhuman physical and cognitive features that are akin to those of comic book superheroes. However, the current innovations have nothing to do with the ones from the past and their development goes beyond a simple technological perspective. On the contrary, they are raising the prospect of a human enhancement revolution that will change the ways with which future wars will be fought and may even profoundly alter the foundations upon which our modern societies are built on. This book, which discusses the full ethical implications of these new technologies, is a unique contribution for students and scholars who care about the morality of warfare.