In the film "Game of Thrones" two things were constantly fun:
1st The night guard carries service on the icy wall, among the snow and frost, the winter is near, all that. They constantly wander without hats, 90% heat loss through the head and the threat of meningitis do not disturb neither the brothers of the night watch nor the suckers.
2nd If any army goes on a march, it does not take any wreaths with it. Neither soldiers nor horses need to eat for a few days and sleep somewhere. On the other hand, there are magic boilers with food and tents.
An unrealistic movie. A story in one word.