Sergeant Major Jonas A. Johnson was born in New Orleans, Louisiana and enlisted in the Marine Corps on 18 September 2001. He completed recruit training at Marine Corps Recruit Depot San Diego and upon graduation, he was promoted to the rank of Private First Class. He reported to the School of Infantry West, Camp Pendleton, California for Marine Combat Training in March 2002 and was then transferred to the Armed Forces School of Music in Norfolk, Virginia where he earned the Basic Musician MOS.
In November 2002, Private First Class Johnson reported to the 2nd Marine Division Band at Camp Lejeune, North Carolina for duty as a trombone instrumentalist. He was promoted to Lance Corporal in April 2003 and Corporal in October 2003. During this time, Corporal Johnson was collaterally assigned as a Stability and Support Operations Instructor in preparation for deployment in support of Operation Iraqi Freedom. Following his promotion to Sergeant in January 2005, he deployed in support of Operation Iraqi Freedom to Ramadi where he served as a Sergeant of the Guard for Headquarters Battalion, 2nd Marine Division.
Upon redeployment, Sergeant Johnson reported to the III Marine Expeditionary Force Band in Okinawa, Japan. He was promoted to Staff Sergeant in June 2008 and his duties as a musician continued until he requested orders to Drill Instructor School.
In October 2008, Staff Sergeant Johnson reported to Marine Corps Recruit Depot San Diego for instruction as a Drill Instructor School student. He was subsequently assigned to Company A, 1st Recruit Training Battalion where he served as a Drill Instructor and Senior Drill Instructor. In July 2011, he successfully completed his tour with 1st Battalion and executed orders to Marine Corps Recruit Depot Parris Island, South Carolina.
Upon arrival at Parris Island, Staff Sergeant Johnson resumed his duties as a musician and was promoted to Gunnery Sergeant in April 2012. In June 2013, he was assigned as the Company Gunnery Sergeant for Headquarters Company, Headquarters and Service Battalion.
He was promoted to First Sergeant in January 2015 and returned to Camp Lejeune for duty as the Company First Sergeant for Company A and Headquarters and Service Company, 2d Tank Battalion, 2d Marine Division. In December 2017, he transferred to 1st Battalion, 2d Marine Regiment to serve as the Weapons Company First Sergeant.
In June 2018, First Sergeant Johnson reported to Headquarters and Service Battalion, Marine Corps Base Quantico for duty as the Headquarters Company First Sergeant, and in March 2019, he was selected to serve as the Battalion Sergeant Major for Security Battalion, Marine Corps Base Quantico.
Sergeant Major Johnson was promoted and assumed his current post as the Sergeant Major for Marine Corps Air Facility Quantico in March 2020.
Sergeant Major Johnson's personal awards include the Navy and Marine Corps Commendation Medal with one gold star in lieu of second award, Navy and Marine Corps Achievement Medal with two gold stars in lieu of third award and he holds a Bachelor of Science degree in Business Management from Park University.