Lieutenant Colonel Andrew Abbott, a native of New York, graduated from SUNY Oneonta in 2008 with a degree in political science and commissioned that same year as a Second Lieutenant in the United States Marine Corps. After completing The Basic School and Infantry Officer’s Course, he was assigned to 1st Battalion, 1st Marines at Camp Pendleton, California, where he began his career as a Platoon Commander with Alpha Company.
In 2010, Lieutenant Abbott transferred to 2nd Battalion, 1st Marines to join an Embedded Training Team. Later that year, he deployed to the Garmsir District of Helmand Province, Afghanistan. Following his return, he assumed the role of Company Executive Officer for Golf Company, 2nd Battalion, 1st Marines. In December 2011, he volunteered to deploy again, this time as an Operations Officer of an Embedded Training Team with 2nd Battalion, 5th Marines. In February 2012, he deployed to Nawzad District, Helmand Province, Afghanistan.
Upon returning from this deployment in May 2012, Lieutenant Abbott transferred to the Marine Corps Reserve. He then joined Lima Company, 3rd Battalion, 23rd Marine and deployed to the Republic of Georgia as part of the Georgia Deployment Program. In May 2013, he transferred to Weapons Company, 1st Battalion, 25th Marines, where he led the Combined Anti-Armor Team Platoon through Integrated Training Exercises (ITX) 4-14, African Lion 2015, and Nordic Frost 2016. Additionally, Captain Abbott graduated from the Expeditionary Warfare School Distance Education Program in May 2014.
In May 2016, Captain Abbott assumed command of Charlie Company, 1st Battalion, 25th Marines. Under his leadership, the company participated in Riley Xanten II in Burwash, Canada, and ITX 4-18. Two years later, now a Major, he took command of Weapons Company, 1st Battalion, 25th Marines, participating in Spartan Fury 2019, leading the unit through ITX 5-19, and a deployment to Okinawa, Japan, under the Unit Deployment Program from late 2019 to mid-2020. After relinquishing command, he was assigned as the Executive Officer of 1st Battalion, 25th Marines, serving in that capacity until December 2021.
In May 2023, Major Abbott completed the Command and Staff College weekend seminar program. Later that year, he joined the 3rd Civil Affairs Group (CAG), where he attended the Marine Corps Civil-Military Operations School and served as the lead planner for Raven 24-6.
Lieutenant Colonel Abbott was selected to command 1st Battalion 23rd Marines and assumed those duties on January 24, 2025. In addition to his military career, he holds a Master of Public Administration degree from the Rockefeller College of Public Affairs & Policy.