• Divine: Can only be acquired through their church or other representative of their deity.
• Network: A distributed group of people, hard to attack in one swoop.
• Service: Noncombatant person or group, usually retained for a special service provided.
• Magic: Capable of using magic.
• Squad: A closely knit person or group that can be used for attack and defense.

Some units can be improved with skill upgrades. These upgrades are applied when the unit is purchased.