It's about the civil wars in america in the same age.
Playable nations:
Something with Union.
The federation.
And some more.
Unlike cossacks, here you have to place workers in your barracks, and train them to warriors.
I really hope someone can help me with this, as I can't find it anymore.
It would be alot easier if I knew the game title
![Sad :(](./images/smilies/icon_sad.gif)