Jeff McMahan urges us to reject the view, dominant throughout history, that mere participation in an unjust war is not wrong. He argues powerfully that combatants who fight for an unjust cause are acting wrongly and are themselves morally responsible for their actions. We must rethink our attitudes to the moral role of the individual in war. - ;Killing a person is in general among the most seriously wrongful forms of action, yet most of us accept that it can be permissible to kill people on a large scale in war. Does morality become more permissive in a state of war? Jeff McMahan argues that c