I still don't see the difference between sending humans to attack cities with lethal force versus sending drones to do the same. It's how war's been waged for

I still don't see the difference between sending humans to attack cities with lethal force versus sending drones to do the same. It's how war's been waged for centuries. World War II took place in cities and fields. No reason to think drones would change the strategies we've used since combat planes.