He turns up again, however, before the walls of Erebor disguised as an old man, revealing himself when it seems the Men of Esgaroth and the Mirkwood Elves will fight Thorin and the dwarves over Smaug's treasure. The Battle of Five Armies ensues when hosts of goblins and wargs attack all three parties. After the battle, Gandalf accompanies Bilbo back to the Shire, revealing at Rivendell what his pressing business had been: Gandalf had once again urged the Council to evict Sauron, since quite evidently Sauron did not require the One Ring to continue to attract evil to Mirkwood. Then the Council "put forth its power" and drives Sauron from Dol Guldur. Sauron, however, has anticipated this and withdraws as a feint, only to reappear in Mordor.