> and not everyone will have robots

This kinda plays out already - where not every "side" has a military or soldiers, so the battle is fought between soldiers and "civilians".

Any battle between a state with drone invading forces and one without, is going to be indistinguishable from an invading robot army indiscriminately killing all the civilians.

Hopefully the military will aim to minimize civilian casualties.

And in the next invasion of Afghanistan/Iraq/Canada the local resistance will end up dressed as civilians (either duplicitously or as a consequence of there not being any military left with supply chains of uniforms) - and the actual civilians then all get targeted by the robots.

Seeing this already in Palestine.

It's not pretty, but war never is. I am surprised at how people today can point at a war and be surprised that atrocities happen. World Wars, Korea, Vietnam let alone the immediate history of Israel. Serbia and Croatia anyone?

It's not like we don't have plenty of historical sources. War is bad business and trying to claim that "civilians" should be exempt is not fooling anyone who's had even a precursory glance over such material.