Col Leimbach was born and raised in Baltimore, MD, and graduated from Baltimore’s Friends High School in 1988. He graduated from the University of Delaware 1992 with a BS in Computer and Information Sciences and a minor in History. He was commissioned a Second Lieutenant in the U.S. Marine Corps in July 1992 after completing Officer Candidate School. He was assigned as a Tank Officer and attended the Armor Officer Basic Course at Ft. Knox, KY in 1993.
As a Lieutenant he served as a Tank Officer with the 2nd Tank Battalion, 2nd Marine Division in Camp Lejeune, NC, from 1993-1997. While there he served as the 2nd Platoon Commander, C Company and subsequently as the TOW Platoon Commander, H&S Company.
In 1997 then Capt Leimbach was assigned to his first tour with Marine Corps Systems Command (MCSC) in Quantico, VA as a project officer for the Program Manager for Tank Systems. Subsequently, in 1999 Capt Leimbach was sent to the Army Armor Captain’s Career Course (ACCC) at Ft. Knox, and then back to 2nd Tank Battalion at Camp Lejeune. While at 2nd Tank Battalion Capt Leimbach served as the D Company Commander and assistant operations officer, and as the H&S Company Commander.
From 2002-2004 Maj Leimbach was a student at the Naval Postgraduate School (NPS) in Monterey, CA where he received a Master’s Degree in Business Administration with a focus in Systems Acquisition Management. Upon graduation he was reassigned to MCSC and took on responsibilities as the Individual Armor and Load Bearing Team Leader for the Program Manager for Infantry Combat Equipment. While serving in that billet Maj Leimbach was selected as an Acquisition Professional Officer (8061) in the first year that the MOS was competitively offered.
In 2006 Maj Leimbach was transferred to PM Tank Systems where he served as the M1A1 Project Officer and then as acting Program Manager. In 2007 he was selected to serve as the Program Manager for Tank Systems where he contributed to the fielding of the programmable 120mm Multi-Purpose High Explosive (MP-HE) main gun ammunition. In August of 2010 LtCol Leimbach was reassigned to the office of the Program Manager, Advanced Amphibious Assault, Program Executive Officer Land Systems where he served as the Deputy Director for the Marine Personnel Carrier Program until June of 2012.
From June 2012 to June 2013 LtCol Leimbach served as a Secretary of Defense Corporate Fellow. During that time he worked as a member of industry with Accenture Federal Services in Washington, DC. In 2013 he was selected to be the DPM AAA, Stafford, VA where has served supporting the sustainment of the Marine Corps’ legacy Assault Amphibious Vehicle (AAV) fleet and the ACAT IC Amphibious Combat Vehicle (ACV) program. Col Leimbach was promoted to his current rank in September 2014. From mid-2017 to June 2018 he served as the Program Manager.