It has been some twenty months since Sir Lothar, one of the crown's greatest heroes, led an expedition into the Dead Mines to search for the Lost Tome of Divinity. They were never heard from again. However, the great knight has recently appeared to the Abbot of Northshire in a vision - battered and pleading for assistance. King Llane has ordered you to lead a detachment of warriors and healers into the mines in an attempt to find Sir Lothar, heal him, and bring him and any other survivors back alive.
Wounded can only be found in this mission, and they will resume their roles as Archers once one of your units moves into contact with them, or a Cleric casts the Healing spell on them. They have very few HP left, so it is advisable to have a Cleric heal them as soon as possible.
Contrary to what the mission briefing and mission objectives list say, you do not actually need to heal Lothar. Simply moving him to the dungeon's exit area is enough to complete the mission.