I signal this game http://www.real-warfare.com/

Barn Allen on outofeight gives him a good rate http://www.wargamer.com/article/3121/pc-game-review-real-warfare-2-northern-crusades

The better is the great moddability of engine; the game is interpreted using a metalanguage and the editor included is the same used by the developers

I have created my little mods amusing my self to improve the realism of battlefield mechanics and AI unit reactions