Is damage removed at the end of combat, even when no units die?

Ruling: Yes, damage is always removed at the end of combat, even if no units die.

Sequence:

• Combat damage is dealt
• Any units with lethal damage are killed
• Units are healed of all damage (this happens once per combat, immediately after units have died from lethal damage)
• After healing, any triggers resolve

Nuances:

• Abilities that trigger at end of combat (like Deathknell) resolve after the heal step, so damage dealt by those abilities remains on units after combat ends
• If you stun an enemy unit, deal damage but it doesn't die, then recall your unit and engage again, the enemy will have healed from the first combat