What happens when a 4 might unit is sent to a battlefield with a stunned 5 might unit on it?

Ruling: The 4 might unit assigns 4 damage to the stunned 5 might unit. At the end of combat, both attackers and defenders remain, so attackers are Recalled.

Sequence:

• The attacking unit assigns 4 damage
• At end of combat, attackers are Recalled (moved back to the base)

Nuances:

• Recall does not count as a move
• Recall cannot be responded to using reactions