I am preparing to play my first game with Irregular troops in my list. And while I understand that Irregular troop don't add an order to the overall pool; what I am confused about is if an Irregular troop can still use orders from the regular order pool. For example, I have McMurrough deployed on my side. Do I only get to use his Impetuous order and irregular order? Or can I still use the regular orders its group order pool to continue to move him?