That’s a war crime, but I have seen unhinged drone operators who prefer to fly these drones than doing anything else because “they like the killing”, exact words said by one.

Technically speaking, it’s not impressive, you can train a simple local object recognition in the companion computer in the drone to fly at that specific object, so just train it on soldiers images and communicate over serial port and let the open source auto pilot do the navigation, again, nothing is that impressive, a weekend project, personally done before but not on humans and it was for good.