The ever-increasing power of computers is arguably one of the defining characteristics of our time. Computers affect almost all aspects of our lives and have become an integral part not only of our world but also of our very identity as human beings. They offer major advantages and pose serious threats. One of the main challenges of our era is how to respond to this development: to make sure computers enhance and do not undermine human objectives. The imposition of force by one individual against another has always been an intensely personal affair – a human being was physically present at the point of the release of force and took the decision that it would be done. It is inherently a highly controversial issue because of the intrusion on people’s bodies and even lives. Ethical and legal norms have developed over the millennia to determine when one human may use force against another, in peace and in war, and have assigned responsibility for violations of these norms. Perhaps the most dramatic manifestation of the rise of computer power is to be found in the fact that we are on the brink of an era when decisions on the use of force against human beings – in the context of armed conflict as well as during law enforcement, lethal and non-lethal – could soon be taken by robots. Unmanned or human-replacing weapons systems first took the form of armed drones and other remote-controlled devices, which allowed human beings to be physically absent from the battlefield. Decisions to release force, however, were still taken by human operatives, albeit from a distance. The increased autonomy in weapons release now points to an era where humans will be able to be not only physically absent from the battlefield but also psychologically absent, in the sense that computers will determine when and against whom force is released. The depersonalization of the use of force brought about by remote-controlled systems is thus taken to a next level through the introduction of the autonomous release of force.