Used them in a normal conjunction battle order and they just did not do enough damage i don't know but it felt like they shot into the ground time to time (i saw a post of this so i might be partial )
They also died extremely easy and right now i feel like i have to scrap them and switch the artillery with cavalry or more heavy guns (which was extremely lethal in a really really great way, love the artillery fights now )
-- U -- U -- U -- U --
- = infantry
U = artillery