
Some units gain an attack and/or defense bonus when on a certain type of terrain. This means the most a barracks can hold is 5 units. A barracks can train and hold two units after being built, but it has two more slots to be unlocked using coins and supplies. An example is to have researched Spears, built a Spearfighter Barracks, and then you can train Spearfighters from this military building. To train a unit, you have to build their specific barracks/building after having researched the technology. They each have different properties, and players need to change their play style and tactics depending on which units they use most. They are light units, heavy units, fast units, ranged units, and artillery units. There are five classes of military units in the game.

Military units are the soldiers used in battle, acting an essential role in the game. Posted from the FoE Wiki: Military Guide: Introduction
