-It composes of about a thousand soldiers, with a hundred or so hangers-on.
-The Captain-General hates that sort of thing, but the company is composed of units each with a sergeant, that reports to him. Therefore, any sergeant and their unit good at deception can get away with some nasty stuff.
Overarching goals can vary from merc to merc. Officially, they just want to make money.But everyone can have their own agenda.