When a unit moves to attack but stuns the defender without removing them (e.g., 4 Might attacking 5 Might), does the attacking unit return to base via a 'recall' or a 'move'?

Ruling: When an attacking unit fails to remove all defending units from a battlefield (even if they stun them), the attacking unit returns to base via a recall, not a move.

Sequence:

• Attacker moves to battlefield with defending unit
• Combat occurs, attacker stuns defender but doesn't remove them
• Attacker has failed to conquer (defenders remain)
• Attacker recalls back to base

Nuances:

• The distinction between "move" and "recall" matters for card effects that trigger on one action but not the other
• Stunned units don't kill the attacker, but their presence still means the attacker failed to conquer
• Only the attacker recalls; the defender remains (stunned) on the battlefield