Book 6, Chapter 4 Summary

Returning to the battle outside the Black Gate, the Eagles -- led by Gwaihir the Windlord -- attack the Nazgûl until, suddenly, the Nazgûl turn and fly toward Mount Doom. As Sauron's power leaves the orcs, the orcs are instantly confused and afraid and the Captains of the West see this and attack. Fortunately, Gandalf stops them and, as the men watch, the Black Gate and the towers flanking it fall, showing that Sauron has passed. With their master gone, the orcs and trolls run away, but many of the men who had joined Mordor stand to fight. However, most either run away or surrender.

Gandalf calls for Gwaihir and the Eagle carries Gandalf toward Mount Doom -- with two of his Eagle brothers following. There, Gwaihir spots Frodo and Sam as they sit on a rocky outcropping with...