Lieutenant Colonel Brian Kerg enlisted in the United States Marine Corps Reserve in 2003. Upon graduation from Marine Corps Recruit Depot Parris Island, he reported to the School of Infantry-East at Camp Lejeune, North Carolina, and was designated as a Mortarman. He reported to Weapons Company 1/24 in Perrysburg, OH in August 2003, where he served as a SAW gunner, 81mm mortar assistant gunner, and 81mm gunner.
He completed Officer Candidate’s School Platoon Leaders Class-Combined in 2005 and graduated from Wright State University with a Bachelor of Arts in History and a Bachelor of Arts in Comparative Religion in 2006. He was commissioned as a Second Lieutenant in the United States Marine Corps in June 2006.
He reported to The Basic School at Quantico, VA in August 2006, graduating in March 2007 with orders to the Basic Communications Officer Course (BCOC). While awaiting the start of the next BCOC class, he served at the Marine Corps History Division as an assistant historian.
He reported to BCOC in July 2007 and graduated in December 2007. He then reported to Communications Company, 1st Marine Logistics Group at Camp Pendleton, CA. He served as the Radio Platoon Commander and Multiplexing Platoon Commander before being assigned as the S-6 and Communications Platoon Commander for Combat Logistics Battalion-11. He deployed to the Western Pacific with the 11th Marine Expeditionary Unit in September 2009, redeploying in April 2010.
In June 2010 he reported to Detachment Communications Company, Headquarters Battalion, 4th Marine Division to serve as the Inspector-Instructor in Indianapolis, IN. In October 2011 he deployed in support of NATO Training Mission-Afghanistan 12.1, serving as the detachment’s Executive Officer, as an Afghan Border Police advisor, and as the Site Commander of an ABP training site in Nangarhar Province. Upon redeployment in August 2012, he resumed his duties as the Inspector-Instructor at Detachment Communications Company.
In June 2013, he reported to the University of Michigan Naval Reserve Officers’ Training Corps (NROTC) unit, where he served as the Marine Officer Instructor. In this capacity he also served as the Operations Officer, and as an Assistant Professor of Naval Science. He augmented as the Platoon Commander, Second Platoon, Company G for OCS second increment 2013, as the Platoon Commander, First Platoon, Company I for OCS second increment in 2014, and as the Operations Officer, NROTC Marine Corps Mountain Warfare Training Center Summer Cruise.
In July 2016, he reported to the 1st Marine Air Wing in Okinawa, Japan, where he served as the Deputy Assistant Chief of Staff (AC/S) G6, and later as the AC/S G6. In this capacity he also served as the Combined Marine Forces (CMARFOR) C6 for Cobra Gold 2017.
In June 2017, he reported to Communications Company, Combat Logistics Regiment 37, 3d Marine Logistics Group, where he served as the Company Commander. In March 2019, he turned over command and was assigned as the Deputy AC/S G6, 3d Marine Logistics Group.
In July 2019, he reported to US Fleet Forces Command, where he served as the Fleet Amphibious Communications Planner and as the Expeditionary Operations advisor to the Theater Security Cooperation Cell, U.S. Naval Forces North.
In July 2021, he reported to the School of Advanced Warfighting. Upon graduation, he was designated an Operational Planner. In July 2022, he reported to III Marine Expeditionary Force. From 2022 to 2023 he served as the G-5 Northeast Asia Plans Officer, and from 2023 to 2024 he served as the G-5 Director of Plans.