When ... a military leader takes upon himself the responsibility for an attack and sends a number of men to their death, he chooses to do it and at bottom he alone chooses. No doubt under a higher command, but its orders, which are more general, require interpretation by him ... In making the decision, he cannot but feel a certain anguish. All leaders know that anguish. It does not prevent their acting, on the contrary it is the very condition of their action.