Gothmog's Army was the force responsible for the destruction of the hidden Elven city of Gondolin, and for most of the victories of Morgoth in the First Age.
This army was assembled in FA 510 after Maeglin's betrayal under the leadership of Gothmog. The army appeared to be the most advanced in technology compared to the rest of the Glamhoth. It was made up of Orcs, Trolls, Werewolves, Dragons, and Balrogs. They surrounded the city of Gondolin and besieged it killing nearly all in an immense battle, save for the few that followed Tuor and Idril. Gothmog, however, was slain in this conflict by Ecthelion of the Fountain.
In older versions of the legendarium, they used iron machines fueled by "internal fire" as personnel carriers and to destroy fortifications.
- ↑ The Silmarillion, Quenta Silmarillion, Chapter XXIII: "Of Tuor and the Fall of Gondolin"
- ↑ The History of Middle-earth, Vol. II: The Book of Lost Tales Part Two, chapter III: "The Fall of Gondolin"