You may also like the "Total war" series. It is strategy play at your own pace as you build your empire. When you go to war the game opens a battle map with hundreds of characters fighting epic battles.
They have versions that include armies from Rome to Napoleon. It's really good. The video below shows some of the strategy and battle maps from the Napoleon version. The newest version is "Attila", but You may want to buy a used copy of an earlier version. They all have similar gameplay.
There is also a very active mod community. You can DL versions from the Boer war to Lord of the rings.
https://www.youtube.com/watch?v=XG_yeeCILsw 
