Air Nation

The air nation is the smallest of the Nations they are nomads that wander from place to place aside from their temples they usually have their communities in it is these temples that the Fire Nation attacked at the beginning of the war since then they have tried to find refuge in wherever they can. The philosophy of the air nation is that all life is sacred due to their pursuit of spiritual enlightenment it is this very reason that Avatar Aang never defeated the Fire Nation.( at least this thread)

(Okay I'm going to go in a little bit of a rant here the thing is if they were truly nomadic then no matter how the Fire Nation attacked them there is no way that they should have been able to wipe them all out)