The voices in the demo are very good. I wish people would stop whining about them. The only thing that I dislike is the units telling you their name for the upteenth time; it gets tedious after a while. So, I'm going to try to mod that out of the game, if possible.

As for other voices; it's good that the units tell you what they are doing; it adds to the realism. Remember, it's actually your general unit giving out the orders, after which the unit commanders guide their men (cavalry; CHARGE!).