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]
(..) Move! Keep going, you dogs! Move! Forward, I say! Stop here! Who commands here? I am the emissary... ...to the ruler of all the world... ...the god of gods, king of kings... ...and by that authority... ...I demand that someone (..)2006 300