Healer

Healers are units capable of restoring the hit points of other units. This can turn the tide in battle, as well as save the resources needed to train replacement soldiers.

Age of Empires

 * Priest

Age of Empires II

 * Monk
 * Missionary (Spanish only)

Age of Mythology

 * Priest (Egyptians only)
 * Valkyrie (Norse Myth Unit)
 * Servant (Atlantean Myth Unit)
 * Caladria (Atlantean Myth Unit)

Age of Empires III

 * Priest (Europeans)
 * Missionary (Spanish only)
 * Imam (Ottomans only)
 * Medicine Man (Native Americans)
 * Surgeon
 * Brahmin (Indians only)