Yeah Puhi I'm beginning to think that losing units is not only unavoidable but maybe even optimal, since if it allows you to capture the cities quicker, it might be best for this mod as you need to capture quickly before they can spam even more units than in the basegame, and also they tech a lot quicker.
I lost a few units fighting the E neighbour as well.
Quick update for my game: I loaded the save just to look at it so I could think about my strategy while at work, and saw a Tercio
I guess I need to push towards Cannons, fast
It's just something we've become accustomed to in Acken's mod - you really never have enough units, and you'll lose 1-2 every turn during a seige on a warmonger, and there's just not much you can do about it. You can't move and fortify a meatshield on the same turn, so it invariably ends up taking 4 hits from units/bombardments, and nothing is going to live through that. Even if it does, it probably can't live for the 2nd turn, so you might as well get some damage out of it.