Go to Shadowfang Keep and obtain Springvale's Sharpening Stone from Commander Springvale, 5 crates of Moonsteel Ingots, and 5 Deathless Sinew.
Many members of the Shattered Hand do not survive their training, <name>. Not only have you survived, but you will soon become a feared blade of the Horde.
As a reward for your progress, the warchief has commissioned his personal smith to forge a weapon.
The cursed Shadowfang Keep in Silverpine Forest is the only place to get the materials you'll need. Travel there and recover Commander Springvale's sharpening stone, a supply of moonsteel ingots, and sinew from the ghouls and geists infesting the keep.