Armor is a piece of clothing worn to protect the wearer from harm. In Age of Empires and Age of Empires II, there are two different kinds of armor. Melee armor allows the unit withstand certain blows according to the amount of armor it has which is represented by a number. Piercing armor protects the unit from missile damage from ranged units. Armor can be improved by researching technologies from the Storage Pit, the Blacksmith or the Arsenal.