There are many aspects to combat in Evony. Understanding unit and range and speed are the basics behind the combat system. There different strategies to attack such as using phract smacks, scout bombs, archer rainbows, and mech rainbows. But there are also different ways to defend such as different wall defence configurations, and it’s important to know how to spam these out. There are also other factors which influence battle such as honour. There’s a lot of info on all these topics and also about other things such as unit travel distance, colonising and training troops.