The scenario I am thinking about is, that bombing an apartment block full of civilians is quite clearly a war crime. On the other hand, bombing barracks is not.

The scenario I am thinking about is, that bombing an apartment block full of civilians is quite clearly a war crime. On the other hand, bombing barracks is not. And since a drone pilot on leave is as far as I understand still a combatant, he can be attacked given that the harm to civilians is 'proportional.' [1] [1] https://en.wikipedia.org/wiki/Military_necessity https://en.wikipedia.org/wiki/Military_necessity