What is the difference between dead units and wounded units?

Defeated units in battles will be transformed into the following three states according to a certain percentage:

• Dead

Units that were killed in combat and cannot be revived

• Heavily Wounded

Heavily wounded units will be sent to medical stations when they return to the camp, they need to be healed. Units exceeding the medical station capacity will die instantly when the troop arrived at the camp.

• Slightly Wounded

Slightly wounded units will recover automatically when they return to the camp. 

* Units will not die in non-player vs player battles, but heavily wounded units who can't get into medical stations will die instantly when the troop arrived at the camp.