The world is evolving and everyone wants to take advantage of it. More lands mean that the empire would have more money and that is how the war started. It is all about the warlords claiming the land for their own. In this game, you would need to choose a raise to represent. Once, you have done that then you would need to go to war. Whenever, you win a territory, you gain more money, which you can spend on upgrading your units or buys new unit for you to command. You would need to conquer all the land if you want to be a warlord.