Complete these first; For The Horde! is the final step.

1. 1
   Warlord's Command · level 60

   Slay Highlord Omokk, War Master Voone, and Overlord Wyrmthalak. Recover Important Blackrock Documents. Return to Warlord Goretooth in Kargath when the mission has been accomplished.

   Pick up: Warlord Goretooth, Kargath, Badlands
2. 2
   Eitrigg's Wisdom · level 60

   Speak with Eitrigg in Orgrimmar. When you have discussed matters with Eitrigg, seek council from Thrall. You recall having seen Eitrigg in Thrall's chamber.

   Pick up: Warlord Goretooth, Badlands · Turn in: Thrall, Orgrimmar
3. 3
   For The Horde!