Animosity Friendly Orc models gain a bonus of +1 To Wound in the Fight phase if they are involved in the same fight as a friendly Uruk-hai model. Friendly Uruk-hai models gain a bonus of +1 To Wound in the Fight phase if they are involved in the same fight as a friendly Orc model. (Directly fighting, not spear supporting)
Their Pace has Quickened If your army includes Mauhúr then any Uruk-hai Scouts in your force may be upgraded to Mauhúr's Marauders rather than just the ones in Mauhúr's warband - this upgrade is free rather than costing 1 point per model. Additionally, Uglúk, Uruk-hai Scout Captains and Uruk-hai Drummers increase their Move value to 8".