As you advance through the ages, you can research technologies to improve your civilization. After you advance to the next age, you can research additional technologies to make your villagers work more efficiently and improve your military units. Researching technology takes time and costs resources, but after you have researched a technology, your civilization immediately begins reaping its benefits.
Some technologies are related and build on each other from one age to the next.
For example, in the Feudal Age, you can research Scale Barding Armor to give your cavalry units more protection from attack. In the Castle Age, you can research Chain Barding Armor, which provides your cavalry units with even more protection, and in the Imperial Age, you make the ultimate improvement by researching Plate Barding Armor. For example, to research Tracking, click the Barracks, and then click the Research Tracking button. Tracking As the Dark Ages passed and barbarian clans became trained armies, military techniques improved. The new armies were better prepared for campaigning and maneuver.