I love sending my Armies of Doom into the fray, and sometimes find myself getting attacked several times ... while, when I am doing it right, I can smash through them without too much trouble, sometimes I find I have to avoid dealing the final killing blow so that I can cast enough heals to restore my troops before the next fight, which seems rather silly -- why not have an option at the combat summary screen, if you have heals or some sort of healing potions in your army's inventory, to cast heal or use those healing potions?