Villager

The Villager is a class of unit trained out of the Town Center and the foundation of each civilization's economy. The main role of the Villager is to gather wood, food, gold, and stone so other buildings, units, and technologies may be produced. The Villager of all civilizations except for the Mongols is also capable of building all economic, military, and most defensive structures. It is crucial that a player protects his or her villagers at all costs, as they are ineffective (though not completely defenseless) in combat and serve as the beating heart of a civilization. Most games are decided by the loss of a player's villager population and the subsequent collapse of his or her economy.

In-Game Description
"Gathers food, wood, gold, stone. Constructs and repairs buildings."