Pushing north from Dun Morogh, the regiment lent their aid to the besieged hill dwarves of Northeron. Trudging throughout the then-named "Twilight Highlands," the regiment engaged the cult of the Twilight's Hammer and the Dragonmaw Clan of orcs alongside their dwarven allies. The regiment joined the forces of the Grand Alliance as they struggled against the New Horde at the dwarven capital of Thundermar. The Alliance withstood the siege, forcing the Horde to remain in Bloodgulch.

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