She has a reputation that 'commands' attention/respect. [=people give her respect/attention because of her reputation]
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
She seems to be 'in (full) command of' the situation. [=she seems to have complete control of the situation]
(..) He must not rule. You are the son that I should have had. Commodus will accept my decision. He knows that you command the loyalty of the army. I- I need some time, sire. Yes. By sunset, (..)2000 Gladiator
(..) I'm going to need good men like you. How may I be of service, Highness? You're a man who knows what it is to command. You give your orders, the orders are obeyed and the battle is won. But these senators scheme and squabble and flatter and deceive. Maximus, we must save Rome (..)2000 Gladiator