A new indie game with some interest to us has been released (early access): Fire & Maneuver.
This game is set in the victorian era, where you lead armies of e.g. the Ottoman Empire or of the Northern German Confederation against each other, in simultaneous turn-based battles.
This game is a pure war game, where you battle in a historical setting.
Due to the early access it is freely available though, and might be worth a look for us history buffs.
You can find this game on Steam here and discuss it in our forum here.