Christopher Thomas was born in Franklin, Louisiana. He enlisted in the United States Marine Corps on April 19, 1994 and completed recruit training at MCRD San Diego. Following recruit training, Private Thomas attended Marine Combat Training and Motor Vehicle Operators Course where he attained the Military Occupational Specialty (MOS) 3531. In December 1994, Private First Class Thomas was assigned to 3d Combat Engineer Battalion (CEB), 3d Marine Division (MarDiv), Camp Hansen, Okinawa, Japan upon completion of his MOS school where he served until December 1995.
In December 1995, Lance Corporal Thomas was transferred to Marine Wing Support Squadron 271 (MWSS-271) in Cherry Point, North Carolina. While assigned to MWSS-271 Corporal Thomas deployed to Port-au-Prince, Haiti in support of Operation Uphold Democracy and Naval Air Station Rota, Spain to assist in the loading and off-loading of an Maritime Prepositioning Ship. Corporal Thomas lateral moved to 3533, Logistical Vehicle System Operator while assigned to MWSS-271. In November 1999, Sergeant Thomas received orders to 9th Engineer Support Battalion (ESB), 3d Force Service Support Group, Camp Hansen, Okinawa, Japan.
While assigned to 9th ESB, Sergeant Thomas served in numerous key billets within the Battalion to include, Platoon Sergeant, Marine Corps Integrated Maintenance Management System Clerk, Truck Master, Quality Control Non-Commissioned Officer (NCO), and Maintenance Tool Room NCO. In April 2002, Sergeant Thomas received orders to report to Drill Instructor School, Marine Corps Recruit Depot (MCRD) Parris Island, South Carolina.
Upon completion of Drill Instructor School Sergeant Thomas was assigned to Company M, 3d Recruit Training Battalion (RTBn). Staff Sergeant Thomas completed 8 demanding cycles in the serving in the billets of Drill Instructor and Senior Drill Instructor. While assigned to 3d RTBn, Staff Sergeant Thomas was promoted meritoriously to Gunnery Sergeant. In May 2005, Gunnery Sergeant Thomas received orders to Truck Company (Co), Headquarters Battalion (HQBN), 3d MarDiv, Okinawa, Japan.
Gunnery Sergeant Thomas reported to Truck Co, HQBN, 3d MarDiv, where he served as Platoon Sergeant and later deployed with 3d Battalion (Bn), 3d Marines to Haditha, Iraq from March 2006 to October 2006. Upon returning from deployment, Gunnery Sergeant Thomas was assigned as the Company First Sergeant for Communications Co, HQBN, Camp Courtney, Okinawa, Japan.
In July 2008, Gunnery Sergeant Thomas executed orders to Transportation Support Co, 2d Marine Logistic Group, Camp Lejeune, North Carolina where he served as the Operations Chief and Co Gunnery Sergeant until his selection to First Sergeant later that year.
First Sergeant Thomas was assigned to Weapons Co, 1st Bn, 9th Marines in February 2009. While at 1st Bn, 9th Marines he served as the Co First Sergeant for Weapons Co and Company B. During this time he deployed in support of the 24th Marine Expeditionary Unit and deployed to Southern Trek Nawa, Afghanistan in 2011.
In February 2012, First Sergeant Thomas executed orders to Company L, 3d RTBn, MCRD San Diego, where he served as the Company First Sergeant until his promotion to Sergeant Major, January 2014.
In January 2014, Sergeant Major Thomas executed orders to Marine Medium Tiltrotor Squadron 363 (VMM-363), Marine Aircraft Group 16 (MAG-16). While assigned to VMM-363 Sergeant Major Thomas deployed to Al Jaber, Kuwait in support of Operation Inherent Resolve from October 2014 to April 2015.
In December 2015, Sergeant Major Thomas executed orders to be the Inspector-Instructor Sergeant Major, 1st Battalion, 23d Marines, Ellington Field, Houston, Texas.
Personal awards include: Meritorious Service Medal (Gold Star in lieu of third award), Navy/Marine Corps Commendation Medal (Gold Star in lieu of second award), Navy/Marine Corps Achievement Medal (Gold Star in lieu of third award), Combat Action Ribbon, and Good Conduct Medal (1 Silver and 1 Bronze Star in lieu of seventh award).