Once you go into battle you normally expend all your troops and lose the ones that either didn't die or get hit, SO you should add a healer's infirmary that it would cost somewhat amount of elixir/dark elixir (varies upon troop and troop damage) and it would take maybe 30 minutes for 50 barbarians (idk just throwing something out there). This would be useful instead of having to completely train new troops.
