Unknown to the Master Chief and the Fellowship, Withered Heath was a region that lied in the east of the Grey Mountains and was feared to be breeding grounds of dragons which hated the dwarves for many years. Gorkil led his army to recruit them to assist the goblins with their goal of conquest.

"Withered Heath, at last, once we secured the dragon's aid, Saruman and anybody who opposes us will be done for," the goblin king spoke in delight.

"Sire, there are fire drakes held captive by the Blue Mountain dwarves," a goblin scout reported.

"The dwarves will soon feel our wrath," Gorkil said.

Two of the walled enclosures were patrolled by dwarf phalanxes equipped with long tridents used for spearing cavalry and monsters. The goblin infantry and wild men of Dunland could handle the dwarf pikemen while the giants and cave trolls demolished the walls. The goblin warriors and wild men managed to tip the tridents so that they could slash and burn those dwarves. The first fire drake was released and joined the goblin army. The flightless dragon could easily scorch pikemen, swordsmen, cavalry, and structures with its deadly fire breathe. The dwarves became aware of the attack and began making their move. Besides the trident-wielding phalanxes, the dwarf axe throwers were short-ranged substitutes to regular archers whereas the dwarf guardians functioned like swordsmen wielding battleaxes and shields. The fire drake unleashed the flaming breathe catching the dwarf melee infantry on fire causing them to run around until they fall to the ground motionlessly. This enabled Gorkil and the goblin spider riders to charge at the axe throwers. "They're going to trample us," muttered a dwarf and the goblin cavalry managed to run over the axe throwers.

The second fire drake was held not far from a dwarf encampment where the dwarf infantry were trained. The wild men pillaged the base while the goblins kept the dwarves busy. After the cave trolls and giants broke a section of the wall, the second drake was freed.

The last captive fire drake was located in an enclosure not far from the production area of war machines. The dwarves' battlewagons were pulled by Yurgs, yak-like creatures, functioned like cavalry to run over archers and normal melee infantry. The half-troll Marauders could skewer the beasts while breaking the vehicle with their pikes. The dwarves' long range Iron Hills catapults could fire two projectiles simultaneously. Gorkil and the goblin spider riders could charge and take out those siege engines. After the dwarves' settlement was razed by the wild men, the cave trolls and giants freed the last captive drake.

"The dwarves are finished in the Withered Heath, I will seek out the Dragon Lord," Gorkil said. He rode to the Dragon Lord's lair and spoke, "Great Dragon Lord, join us and we'll find you a better home than this wasteland here." The goblins succeeded recruiting the dragons and began their next move to Isengard to eliminate Saruman.