Grunt

Grunts are the first and last line of the Horde's defense. These powerful fighters arm themselves with mighty battle-axes and display all of the savagery and cunning of their race. In past generations, Grunts were characterized by their depravity and brutality. But now, under the visionary leadership of Thrall, the Grunts more closely resemble their savage, yet noble ancestors.
Abilities:
Pillage: Each attack that does damage to a building also gains resources. This is a passive ability. Pillage returns half the cost of the building if you destroy it at full health.
Enraged: The Grunt gains the ability to deal more damage as he loses more hit points.