In response to the September 11, 2001 attacks, Sean Huze enlisted in the United States Marine Corps. He reported October 30, 2001 to boot camp at Marine Corps Recruit Depot San Diego. After completing bootcamp and infantry training at Camp Pendleton, California he reported to his permanent duty station at Camp Lejeune, North Carolina, with 2nd Light Armored Reconnaissance Battalion (2D LAR). In February 2003, Huze deployed with his unit to Kuwait in preparation for the invasion of Iraq in March. He fought with his unit in the Battle of Nasiriyah. He completed one tour of duty in Iraq and received several medals and citations with the highest being the Navy and Marine Corps Achievement Medal during his enlistment. All of his writings to date deal with the subject of the 2003 Iraq War. He was discharged from the USMC in 2005.