If you're affiliated with a faction that regularly antagonizes a rival faction then you'd better have more sense than to live in an area likely to be attacked by the rival faction. They knew what they were getting into... And anyways by your logic you might as well abhor the killing of any enemy soldier not personally guilty of a warcrime. They're basically just random innocents persuaded into serving an unfeeling state apparatus after all - not like they deserve to die. Your view on things is too peachy and optimistic. You will always have to kill innocents in order to punish a guilty religion, government, etc.