Rise of Nations/Ages: Difference between revisions

Stables, siege factories, and forts can be built, making it much easier to attack your opponents via mounted units and artillery. Cities can be increased to the large size if there are at least five buildings in their area of influence. Knowledge and metal now play a factor, and universities and mines can be built. Cavalry can now be trained and used to cut a path through the infantry. This is the age where the fighting becomes interesting. Also, buildings are now vulnerable with the introduction of Siege Weapons.

Forts become castles, and catapults can be upgraded to trebuchets, which are significantly more powerful. Also, the supply wagon unit and the spy unit are introduced, allowing for effective siege attacks. All unit types can receive upgrades. The Medieval Age is considered the "height of the defense curve," as it gets easier to attack after the introduction of the supply wagon.