Lieutenant Colonel Nash is a native of Fairfax, Virginia. He commissioned in 2003 after graduation from the United States Naval Academy. Following graduation from the Basic Officer Course and Infantry Officer Course, he reported to 2d Battalion, 8th Marines, in Camp Lejeune, North Carolina. As a Rifle Platoon Commander, he deployed as part of the 26th Marine Expeditionary Unit in support of the Global War on Terror and Operation Iraqi Freedom. As a Rifle Company Executive Officer, he deployed in support of Operation Iraqi Freedom. Following a brief assignment as the battalion's Assistant Operations Officer, Lieutenant Colonel Nash also deployed in support of Operation Iraqi Freedom with II Marine Expeditionary Force (Forward), where he served in the G-3 as the Assistant Ground Operations Officer.
In December 2007, Lieutenant Colonel Nash reported to The Basic School in Quantico, Virginia. While at The Basic School, he served as a Warfighting Instructor, Basic Officer Course Staff Platoon Commander, Basic Officer Course Company Executive Officer, and Infantry Officer Course Instructor. Following his tour at The Basic School, he attended the Army's Maneuver Captain Career Course in Fort Benning, Georgia, graduating in June 2011.
In June 2011, Lieutenant Colonel Nash reported to 2d Battalion, 6th Marines, in Camp Lejeune, North Carolina, for duty as the Weapons Company Commander. While with 2d Battalion, 6th Marines, he deployed to Afghanistan in support of Operation Enduring Freedom in November 2011. Upon return from this deployment, Lieutenant Colonel Nash was reassigned to 3d Battalion, 2d Marines. He deployed with the 26th Marine Expeditionary Unit as the Battalion Landing Team Operations Officer.
From June 2014 to June 2017, Lieutenant Colonel Nash served as the Commanding Officer, Recruiting Station Columbia, South Carolina. Following successful completion of this tour, he reported to Marine Corps University in Quantico, Virginia, where he graduated from both the Marine Corps Command and Staff College and the School of Advanced Warfighting. Upon graduation from the School of Advanced Warfighting in 2019, Lieutenant Colonel Nash reported to 2d Marine Expeditionary Brigade where he served as the Future Operations Officer. In March 2020, he was reassigned to the II Marine Expeditionary Force G-5 (Strategy and Plans), where he served as a Regional Plans Officer until returning to 2d Marine Division in November 2020.
Lieutenant Colonel Nash holds a Bachelor of Science in Economics from the United States Naval Academy, a Master of Military Studies from Marine Corps University, and a Master of Operational Studies from Marine Corps University.