Burning Legion

The Burning Legion (simply the Legion, occasionally referred to as the Legion Forces, the Burning Shadow, or the Great Burning Shadow, and the infinite army) is a vast, innumerable army of demons and corrupted races who seek to destroy all life. Sargeras created it with the purpose of destroying all world-souls in the universe in order to prevent the void lords from corrupting them, which would lead to the birth of a dark titan, a being of unspeakable evil that would utterly annihilate and consume the universe.
The Legion is responsible for the annihilation of countless species and some entire planets across the Great Dark Beyond, and it transcends all universes destroying their possible worlds in the grand Crusade. Much of Azeroth's history — including the First, Second, and Third War — was due to the Legion's influence. It can be said that the Legion is Azeroth's nemesis, since it caused the Great Sundering of Kalimdor, corrupted the orcs and sent them to invade Azeroth, created the Lich King, and was the source of most of Azeroth's scars. Finally, it should be noted that Azeroth is the only known planet that the Legion has ever failed to conquer. Wowpedia - 
==Notes and references==
Category:Organizations