There hasn't been a patch released yet that adds in campaign co-op. A dev on the forums has said that the next patch will be a fix patch and the one after that will be a gameplay upgrade. Quote- "i.
The next patch is coming shortly, this will fix a number of critical code issues. Ii. Following the next patch a massive gameplay update is being prepared which will address: balancing, naval units, AI behaviour and other issues.Iii.
This cycle of 'fix-upgrade' will then continue. " But still no word on when, if ever, they'll add campaign co-op. The latest patch details can be found here: shoguntotalwar.yuku.com/topic/55220/t/Em....
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.