I was already leaning towards trumped-up charged -- forgot to mention that! I'll be able to nail down who issued the charges after this weekend once everyone has a vague understanding about their backstory.
Excellent. How do I figure out how many units to use? I don't want to get everything right and then Zerg-rush them by accident.I'd say that for guards you probably want mainly warriors, with race proportional to the general area. Include a few elite guards with PC class levels as semi-bosses or bosses.