The Lich did something that even surprised Aaron.
The Lich Mage took control of all the ghosts and turned what was a chaotic army into a unified army. They moved as soldiers who were trained and were following a script taught to them beforehand.
Instead of moving as they placed as they used to before, this time they each moved with a purpose.
Aaron wanted to do this, but even when he had a thousand ghosts/skeletons, he couldn't. He could give them all a collective order, but couldn't break into single orders.
It not only put too much strain on his mind, but it also took too much time to do so.
Due to his high INT, the strain could be negated a bit, but the time consumed would give a chance for the opponents to strike at him easily.
It was always a trouble for him to give specific orders, but the Lich made it look easy.
