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Morale works in quick battles; this has been verified through experience: those interested can create a map with a large number of creatures and attack them one by one with 6 units. If, as you say, morale doesn't work in quick battles, then it's a guaranteed loss, but in reality, the creatures will attack in quick battles and often. The funniest thing is that replaying manually in case of a loss in a quick battle allows you to escape :). Conclusion: first, morale works in quick battles; second, morale in quick battles and manual battles are different; third, quick battles are a cheat :).