Defense Secretary Robert M. Gates walks with U.S. Army Maj. Gen. Mark Hertling, commanding general, 1st Armored Division, after arriving in Mosul, Iraq, Dec. 5, 2007. Defense Secretary Robert M. Gates walks with U.S. Army Maj. Gen. Mark Hertling, commanding general, 1st Armored Division, after arriving in Mosul, Iraq, Dec. 5, 2007. SHARE: Download: Full Size (3.93 MB) Tags: Photo Essays Credit: VIRIN: 097112-E-WOU82-576.jpg Photo Gallery