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How did Stannis Baratheon get his huge mounted army north of the Wall? This logistical feat is not explained. Assuming an army of 25,000, it would be hugely time-consuming to go through the Wall's gates.

marked as duplicate by Rand al'Thor, Jason Baker, Wad Cheber, KutuluMike, alexwlchan Jan 23 '16 at 23:36

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