Need advice on combat
I just bought the game yesterday and played about 10 hours already and its pretty fun for the most part but I struggle with the combat sometimes. From what I've seen and read a good strat is to group up 2-4 infantry in a line and have them advance cus the AI is pretty terrible at spreading out their infantry. When I do this though, the AI usually goes stupid mode and starts making weird plays and turns the battle into a mess. Can I fix this somehow or is that just how the game is?
Side Note: How can I wrap up wars quickly? I've had a few attempts at a long Sweden run and Russia always declares on me within a year which is fine. The problem is I can't wrap that war up fast enough and Denmark and Poland also declare while I'm at war with Russia.
I'm playing the game vanilla if that matters.