Lieutenant Colonel Mastin Robeson Jr is a native of the Carolinas. He graduated from the Citadel in 2003 with a degree in Business Administration and was commissioned as a second lieutenant into the United States Marine Corps.
After the completion of The Basic School, Infantry Officers Course, and Light Armored Vehicle Leader’s Course, he joined 2d Light Armored Reconnaissance Battalion where he served from 2004 until 2007. During this period he served in the billets of platoon commander, company executive officer, and company commander, deploying twice with the battalion to western Al Anbar Province in support of Operation Iraqi Freedom.
In June 2007, he reported to The Basic School for instructor duty. In May 2008, he subsequently reported to the Infantry Officer Course, where he served in the billets of instructor and class advisor. In August 2010, he reported to the Expeditionary Warfare School.
Graduating from Expeditionary Warfare School in February 2011, he reported into 3rd Battalion, 6th Marines where he served as the India Company Commander during the battalion’s deployment to Marjah, Afghanistan. Upon his return from Afghanistan, he assumed the duties as the Officer in Charge for an Afghan National Army battalion-level advisor team, deploying once again in September 2012, this time to northern Helmand Province where he served primarily in Sangin and Kajaki Districts with 2d Battalion, 7th Marines. Following his redeployment, in May 2013 he was assigned to the G-3, 2d Marine Division where he served as a future operations planner.
In June 2014, he assumed command of Recruiting Station Albany, New York where he served for three years. In July 2017, he attended and graduated from the Marine Corps Command and Staff College with a Masters in Military Studies.
Following graduation, he reported to Headquarters, 8th Marine Regiment and assumed the role of regimental operations officer. In October 2019, he was assigned as the AC/S J3 for Task Force Southwest rotation 5 and deployed to Helmand Province, Afghanistan. Upon redeployment, he transitioned to the 6th Marine Regiment to take command of 1st Battalion, 6th Marines in October 2020.
His personal decorations include the Bronze Star with gold star in lieu of second award, Purple Heart, Meritorious Service Medal, Navy Commendation Medal with two gold stars, Navy and Marine Corps Achievement Medal with combat distinguishing device and the Combat Action Ribbon with gold star.