I don't think the majority of deaths in combat have been from humans killing other humans that they can see with their eyes for a long time. Possibly well over

I don't think the majority of deaths in combat have been from humans killing other humans that they can see with their eyes for a long time. Possibly well over a hundred years. If killing someone through a camera is action-at-a-distance, so is blowing up an opaque metal box that you know probably has four humans in it, or firing your artillery piece at a grid square that probably has some humans in it, or dropping a bomb on a glowing blob on a thermal sensor that's probably a human. Even in daytime infantry-on-infantry combat, at a lot of ranges you're not shooting at people, you're shooting at piece of cover you saw gunfire emanate from. All of these partially-removed actions are also mainly what we're seeing drones do well at. While one could design a killer robot to go inside buildings and shoot people while looking them in the eye, the complexities and timeframes of close-range combat make it seems like the very last place for robots to replace infantry.