There is my realism mod for Cossacks Back to War available in the download:
The mod changes game rules to be much more realistic just like in real life XVII/XVIIIc battles.
Firstly I was making this mod only for myself. I love Cossacks BTW but originally a lot of things are very unrealistic (like musketeers reloading almost as fast as they have had semi-automatic rifles, not muskets...), but when my mod became more complex i decided to share it.
If you like an old good classic Cossacks Back to War you might try my mod - maybe you'll be the one who like it.