Stewart’s principal command tours include: Tank Platoon Leader with Company A, 1st Tank (1982-1983) and Executive Officer, Headquarters and Service Company, 1st Tank Battalion (1984-1985) Camp Pendleton, California; Company Commander with Company I, Marine Support Battalion, Adak, Alaska (1986-1988); Company Commander with Headquarters and Service Company, 2d Radio Battalion (1989-1990); Company Commander with Company E, Marine Support Battalion, Misawa Japan (1992-1994); Commanding Officer, 1st Intelligence Battalion, Camp Pendleton, California (1999-2001); and Commanding Officer, Headquarters Battalion, 2d Marine Division, Camp Lejeune, North Carolina (2006-2008).
His principal staff assignments include: Project Officer, Light Armored Vehicle, Anti-Tank, Twenty-Nine Palms, California (1983-1984); Assistant Signals Intelligence Officer, 4th Marine Expeditionary Brigade (1990-1991); Assistant Operations Officer, 2d Radio Battalion, Camp Lejeune, North Carolina (1991-1992); Chief, Command, Control, Communications and Intelligence Officer, Special Purpose Marine Air-Ground Task Force, Experimental, Quantico, Virginia (1996-1999); Deputy Director, Intelligence Policy, Office of the Assistant Secretary of Defense, C3I (2001-2002); Deputy G-2, Marine Forces Central Command (2002); Senior Intelligence Planner, Office of the Under Secretary of Defense for Intelligence (2002-2005); Assistant Chief of Staff, Intelligence, Marine Corps Forces Command, Norfolk, Virginia (2005-2006); Assistant Chief of Staff, Intelligence, 2nd Marine Expeditionary Force, Camp Lejeune, North Carolina (2008-2009); and Director of Intelligence, HQMC, Washington, D.C. (2009-2013).
Lieutenant General Stewart’s military decorations include the Defense Superior Service Medal; the Legion of Merit with one gold star; the Bronze Star; the Meritorious Service Medal with one gold star; the Navy and Marine Corps Commendation Medal, with two gold stars; the Navy and Marine Corps Achievement Medal; the Combat Action Ribbon; the National Intelligence Distinguished Service Medal; and various unit awards.