Major Sung G. Kim was born in Busan, South Korea. In June of 1999, he graduated from the University of California at Los Angeles with a B. S. in Sociology. He enlisted in the Marine Corps in 1999. Upon graduation from Marine Corps Recruit Depot San Diego, Calif., he reported to 3rd Assault Amphibian Battalion. He served as a crewman, crew chief and assistant section leader. During his tour, he deployed with the 31st Marine Expeditionary Unit and to Kuwait/Iraq in support of Operation Iraqi Freedom (OIF) 1 in 2003.
In June 2003, he reported to Officer Candidate School in Quantico, Va., by the way of the Enlisted Commissioning Program and was commissioned as a 2nd Lieutenant.
In June 2004, following the completion of The Basic School and the Infantry Officers Course, he reported to 1st Battalion, 7th Marines in Twentynine Palms, Calif. He served as a Combined Anti-Armor Team Platoon Commander and Company Executive Officer of Weapons Company. During his tour, he deployed twice to the Al Anbar Province, Iraq in support of OIF 2-2 and OIF 5-7.
In July 2007, he reported to Marine Corps Security Forces Regiment in Norfolk, Va. He served as a Fleet Anti-Terrorism Security Team (FAST) Platoon Commander and Company Executive Officer for MCSF Training Company. During his tour, he deployed to Guantanamo Bay, Cuba in support of force protection and security mission and Rota, Spain in support of the Force Deployment Program. In 2010, he was selected for Career Level School and subsequently attended the Expeditionary Warfare School in Quantico Virginia.
In 2011, he was assigned to 3rd Battalion, 1st Marines, where he served as the Commanding Officer of Headquarters and Service Company and Kilo Company. During his tour, he deployed with the 11th Marine Expeditionary Unit in support of WESTPAC 2-11.
In 2013, he was assigned to 1st Battalion, 4th Marines where he served as the Commanding Officer of Weapons Company. During his tour, he deployed with the 13th Marine Expeditionary Unit in support of WESTPAC 2-13.
In June 2014, he transferred to Marine Corps Recruiting Station Seattle.