Quote Originally Posted by alh_p View Post
In my experience the vital thing is pulling back, them out of harm's way. Place them behind or deep on your flank, such that your main line of infantry is either in between your unit and the enemy or at least a more favourable target.

Once, and only once enemy forces have engaged your units, then move the light inf in to fire into the backs of the engaged enemy and roll them up the enemy's line untill you get a nice mass rout.

If the situation presents itself and the enemy general is standing behing his main line, you could equally focus your light inf fire on him.
Good tips, will give them a try. My problem is also that I get the 125 range light infantry so late in the game, that I only had a chance to field them in ONE battle. Of course, I could have gone on a conquest spree beyond the required province count just to test them out, but that did not feel like much fun.