The great healer usually only works on defense since your offensive SOD are usually already promoted to the point the 2 or 3 exp points a piece won't be enough to generate a promotion.
In a city that is garrisoned with reasonably green units, it doesn't take many point per unit to get a promotion.
In a city that is garrisoned with reasonably green units, it doesn't take many point per unit to get a promotion.
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