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In TA 2941, after the death of the Great Goblin, as many as 200-400 Goblin Mercenaries from Goblin-town chose to avenge their king and joined Azog's army to lay siege on the Lonely Mountain. During the Battle of Five Armies, several dozen Goblin Mercenaries activated catapults mounted on the backs of several Trolls to destroy the walls of Dale, while more than a hundred others stormed into the city with the Orcs, Trolls, and Ogres. Another group of about a hundred Goblin Mercenaries arrived first at Ravenhill to attack Thorin II Oakenshield and Dwalin while Fíli and Kíli entered the caves of Ravenhill to search for Azog. The Goblin Mercenaries were easily defeated by Thorin and Dwalin. The last remnants of the Goblin Mercenaries band was killed by the Great Eagles, led by Gwaihir the Windlord.
- The Battle of the Five Armies (First appearance)