http://www.msnbc.msn.com/id/24029144/ Marine who lost leg returns to combat in Iraq Sniper’s bullet destroyed gunnery sergeant’s knee, but not his will to serve Video April. 10, 2008 If you’ve ever wondered what the Marines have in mind when they advertise for “a few good men,” look no further than Gunnery Sgt. William “Spanky” Gibson. Two years ago, he lost a leg to a sniper’s bullet in Iraq. Today, he’s back in the combat zone — by his own choice.