How about prisoners of war? would it be posible to take prisoners, like instead of retreat/ force retreat u also cand do surrender and force surrender. less casulties and u culd excange prisoners for resources, or just wait for your enemy to try and bust their friends out were you take them in a ambush. any way i like the idea of being able to surrender, espechialy with expensive units deep in enemy land that otherwise yould get killed if retreating. you culd also be able to get information from the prisoners were the enemy is mobalising for instance.
