OK, I borrowed a game recently off a friend. It's called Empires dawn of the Modern world, and it's quite good. You play from the medieval times to ww2, but your civilization will change when you get to ww1. Each Civilization has different units, such as The USA gets B17s in ww2 when the British have Lancasters ect. The campaigns are Medieval Korea, Medieval England and the USA in ww2. The Map editor is good and I produced a nice little La pointe du hoc map today.