If you don’t have a turn order for battle it becomes like Civ 4 multiplayer - the first to click their battle start has it activate first.
This was very useful in Civ because a good unit type was a stack of catapults specialized to do AOE damage.
I’ve played coop shogun before, it was a lot of fun. It still takes many, many hours to play the game. In a multiplayer, competitive game? As soon as they start losing they will quit.