But only for the loser. Winners never commit war crimes.
Comments like this about how accurate remind me of that comedian (who I don't seem to remember, maybe Arj Barker?) who said:
I'm having an argument with my brother over how accurate the bombs are. He says that they are so precise that they can hit a 50 cent piece, but as I see it when it hits that piece and takes out the whole block then the definition of precision becomes a little hazy.
But talking more about the laws of war, does it not in the examples that are being given favour the more advanced side? If you don't get the joy of having precision guided missiles but you can still deal damage with an IED or ambush, both of which are more likely to kill innocent civilians, that you aren't supposed to do it? Face it, when you are fighting a war no matter how much you want there to be some, you don't really have proper rules. Usually there's no referee who would give you a red card if you break the rules. That's all dealt with afterwards.
So in the end determining whether torture is a war crime all depends on if you lost.