 Reassigned to the CMTC following Command and General Staff College, BG Ryan served as the Executive Officer for the 1st Battalion, 4th Infantry Opposing Forces Battalion (OPFOR) and as the Executive Officer and Operations Officer for the CMTC Operations Group.Returning to Fort Hood, he commanded the 1st Battalion, 8th U.S. Cavalry (Mustangs), 1st Cavalry Division, deploying with his battalion to Camp McGovern, Brcko, Bosnia-Herzogovina on SFOR 4 and then served as the G3 (Operations Officer) for the 1st Cavalry Division.Following graduation from the U.S. Army War College in Carlisle, Pennsylvania, BG Ryan commanded the 1st (Iron Horse) Brigade, 1st Cavalry Division and following that command served as the Director of the Joint Advanced Warfighting Program (now Division)/Analytical Projects Office in Alexandria, VA.