War of Wrath
Morgoth, once the most powerful being in Eä, spent his will on his vast armies and followers, so that in the War of Wrath, as his armies were swept away before the host of Aman, he was captured by Eönwë and cast off his throne. Morgoth's spirit was cast out beyond the Walls of Night, yet his presence remains as the pervasive corruption of the world, "even until the End of Days".