There was a USMC M1A1 Abrams named "War Pig" that took part in the initial invasion of Iraq in '03.
It should be feasible to have "War Pig" in an urban setting. The USMC was heavily involved in figting in Nasriyah and the Eastern side of Baghdad. I don't know the exact fate of "War Pig", but it should have been in on those actions.
Gino P. Quintiliani
Field Artillery --- The KING of BATTLE!!!