What does this mean, and does it have any gameplay consequences? Is that one person is randomly chosen as a Commander of a faction (perhaps the server host?) and he just has a different voice, or would he have some kind of influence over the objectives? I don't exactly know what I mean by that last sentence, maybe they can assign objectives...? Create side objectives, maybe?
Simply put, is a "commander" just a plot character, or does he have a special role in Brink?