Open the Map Properties Tree, select the Military Post on the adventure map, and click [...] next to Shared in the Properties Tree - here you can edit the creatures.
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I once created a random map by the tapani RMG,an interesting thing happend to me.I found in that map a dweling for the death knights.
It was great but I do not know how to make that building my self.
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"Science is not fun without cyanide"