Now that a reloaded a battle 6 times in a row, it's time, I ask around. So the thing is, that whatever happens, the enemy artillery can always hit. No matter where and how I put my troops or myself. It wouldn't be a huge issue for me, but on the other hand, my artillery can't hit anything. I have around 80 days in the game and it never happened, that my 2 cannons hit anything.
The other issue is, that arty is placed in group 1 not 9. Besides that, at the start of every battle, the arty-guys leave the cannons, run around my troops for a while and then get back to their cannons. Meanwhile the enemy already killed half of my troops in one single shot, or me, while i'm standing on a top of a hill far away in my troops, or moving somewhere else to put a couple of people to some other place(A move over there order would be nice, so i wouldn't had less to babysit my soldiers).