Simple - hold ideals in high regard and do whatever you must to live up to them. For example, making the world a better place by murdering everyone you meet, as opposed to being a pragmatist who simply trusts the system to sort things out.
My point is that you’ve just described a moral stance.
Having a moral notion of what is ‘good’ and what is ‘evil’ and prioritizing the good over the evil.
Scifi Where you lead your Mercenary outfit ? kinda lika battletech but without the mechs ?