NATARLE BADGIRUEL SPOILER!

Natarle is the Archangel's executive officer and the person most likely to insist that military procedure still matters while the ship is full of civilians, teenagers and officers improvising their way across the planet. She comes from a military family and often clashes with Murrue because Natarle prioritizes orders and tactical necessity where Murrue is more willing to bend for the people aboard. That does not make Natarle heartless. It makes her a career officer trying to hold onto structure while the Earth Alliance itself becomes harder to trust. Later she is given command of the Dominion under Muruta Azrael, placing her on the opposite side from her former crew. Her final stand against Azrael makes clear that obedience always had a limit. He simply finds it too late.