If I recall correctly, there's a president. Though I don't know about him being in charge. It's hard to tell where government and military begin and end, so who's ultimately in charge...

[Shrugs a little.]

For those that showed up in Veles from the Gate, the closest person to being would be Maes. He doesn't actually tell us what to do, but he's the highest in ranks of us and has most influence. It's likely that the natives won't react very nicely to you if any are out and cross paths with you. If you act natural, they might ignore and assume you've been in Veles and came through the Gate.