Siege of Utumno

The Siege of Utumno was a great battle where the Valar assaulted the greatest fortress of Melkor. Melkor ordered his Balrog generals, Sauron, and many other servants to Angband while he stayed with a great host of evil beings fanatically loyal to him. The greatest of the Nameless fought with Melkor during this siege, but the Valar proved mighty and powerful--in the end Melkor was tossed onto his face by Tulkas and bound by the mystical chain Angainor (forged by Aule).