Make Them Listen

Objectives
Mordiba wants you to defeat 12 Unyielding Footmen, 8 Unyielding Knights, and 6 Unyielding Sorcerers at the Expedition Armory to the west of Spinebreaker Post.
 * Unyielding Footman slain (12)
 * Unyielding Sorcerer slain (6)
 * Unyielding Knight slain (8)

Description
I was sent here to make contact with the Unyielding spirits. These once proud Alliance soldiers were defeated long ago, and now their cursed spirits haunt the ruins to the west.

If they would only join us we would gain a powerful ally. Imagine, a legion of undying warriors to use against our enemies. But these undead are mad with hatred and will not listen to me.

Perhaps they can be forced to join us.

Rewards
You will receive:
 * 9800 XP (or at level 70)
 * +250 reputation with Thrallmar
 * +250 reputation with Thrallmar

Progress
Have you taught the Unyielding the consequences of defying the Forsaken?

Completion
The Unyielding have felt the strength of the Horde. No doubt they will soon be in the mood to listen to my proposed alliance.