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Yes. In this case, Aeron simply falls under the influence of Shadowwood (he has the gift of persuasion). Here, you can actually start a war on two fronts right away. Although, it turns into a complete mess (the orcs destroy the necropolis or vice versa). At first, I even wanted to make them allies (but I thought it was absurd)... ;) Although, I think I was wrong; many considered my campaign too easy (although I honestly struggle to play it :D). But never mind... the second campaign will be payback.:)