As the game starts, you stand accused! And that's all you know!
The Trial allows you to assemble a party of characters under your command. They can be instructed to join you, and sent on various offensive and defensive missions.
Each group of troops you meet has a leader. Leaders are recognisable by a) fancy armour and b) being the only characters with names above their heads.
Commands given to these leaders are automatically passed to their men. The other characters can be spoken to, but have nothing to say. Keep these leaders alive, or you'll have no way of issuing fresh orders.