Finally, research plays an important role in producing better weapons. Catapults, ballistas, cannons, and even the awesome Unicorn can be researched in special buildings and built in war factories. These special weapons add to your infantry army, which you have been cultivating and training to achieve ultimate victory. Ancient Adversaries is unique. Unlike many games where a unit of a type is a unit, in this game experience counts.
Leaders can train fighting men to improve their skills.
A basic soldier has a ten combat rating. A seasoned veteran 100. And the difference is indeed noticeable. More experienced units gain special attacks and can sustain more damage as well. Thus cranking out units is not ultimately as effective a strategy in this game as in others, not only because you must recruit one of your peasants to become a soldier, and they are limited in number.