When Battling, you first choose your Tactic Card. Then, draw and reveal 1 Solo Enemy Card, noting the Strength value listed at the bottom.
This value is added to the Enemy army's total Strength. In addition, a Tactic Card is listed, which is different depending on whether the Enemy is attacking or defending. This Tactic Card DOES NOT add additional Strength to the Enemy’s army nor does it grant VP (only the Solo Enemy Card does), but it may change the result of your Tactic Card. The Enemy does not sacrifice units.
Note: If your Tactic Card cancels the Enemy's Tactic then the Solo Enemy Card's added Strength is cancelled as well.
When losing a Battle, the Enemy loses Units, choosing in this order:
Serfs > Warriors > Air Vessel > Sea Vessel > Hero
Any surviving Units return to the Capital City Courtyard. In the event that a Hero is destroyed, it immediately respawns in the Courtyard.