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human
[GoT] What role did the religion of the Old Gods play in the Night’s Watch? Is the Watch’s decline tied to the decline of the faith of the Old Gods?

So the Night’s Watch is based off the Monastic Military Orders of Europe, I see a parallel especially with the Teutonic Order who governed their own state on the Baltic and warred against tribal Pagans. They specialized in winter campaigns.

Anywho, while these Monastic Military Order’s loyalties were primarily for the organization’s welfare, the ideological foundation was in the western Christian faith in general. 

When we look at the Night’s Watch, we see 98% the Monastic Military Orders except it’s missing a philosophical foundation, besides a vague idea of Honor. 

Has the Watch’s turn to a secular/multi-faith organization been detrimental to the integrity of the Watch?
gpt
If the Night Watch was in any way similar to Teutonics they'd already have set up their own petty kingdom and would be attacking Winterfell. 

I think the "monastic holy order" comparison is superficial only. Its more akin to something like Hadrians Wall in Britain created by the Romans to keep out the Celts. 

However as the empire descended into civil conflict and playing the game of thrones such borderlands and commitments become less and less important. 

The Nights Watch is more a representation of the continents former unity and just regular decline of everything.