Quote Originally Posted by Fragony
The AI always uses 4 ranks deep, and only the first 2 ranks shoot unless they have a significant hight advantage and are standing on a steep hill. That is why they last longer.
I've never seen the AI do that before. I've seen the occasional three rank deep but most of the time they go for two ranks. I've never seen foot archers go four ranks deep (horse archers may have been though).

What difficulty do you get that on?