The Uruk-Hai of Saruman were all his own creations, just ripped off from Sauron. Sauron had already created Orc-Men and Saruman just "perfected"them, as his "Uruk-Hai" were taller, stronger, and more enduring. They could therefore wear heavier armor than regular orcs, so they wernt killed as fast. His Uruks were Uruk-Hai, always reffered to as such, never, as Aragorn said, "Black Uruks of Mordor" in reference to the ones that were sent into Moria by either Khamul or Sauron as the Necromaner in Dol Guldur. (oh, and does any1 know how i can get that little thingy above the U in Khamul?)