If there are going to be people out there making war on other people, don't you think it's a good idea for some of those people to at least follow a code of ethics? Not 'honor' but something you can pin down and be sure of, something with the same rules for everybody.
When warriors feel afraid they lack something, it is only because they are forgetful. They have forgotten how capable they truly are.
Some must be warriors, that others may live in peace.