Major Lambuth was born in McComb, Mississippi on 28 July 1988. He graduated from Parklane Academy in 2006. In May of 2010, he graduated with a Bachelor of Science Degree in Business Administration from the University of Southern Mississippi, and then attended Platoon Leaders Class Combined at the Marine Corps Officer Candidate School. Major Lambuth was commissioned as a Second Lieutenant on 11 February 2011. While waiting for an assignment to The Basic School (TBS), he enrolled in Liberty University and completed a Master of Arts Degree in Management and Leadership. In October 2011, Major Lambuth reported to TBS and completed the Basic Officer Course. Following TBS, he reported to Assault Amphibian Schools Battalion where he attended the Assault Amphibian Officer's Course and graduated as the Honor Graduate. Subsequently, Major Lambuth reported to 3d Assault Amphibian Battalion and was assigned to Company A, selected as the 11th Marine Expeditionary Unit AAV platoon commander, and deployed in support of Battalion Landing Team 2/1.

In May 2015, Major Lambuth was promoted to Captain and reported to the United States Army's Maneuver Captains Career Course (MCCC) at Fort Benning, Georgia. In December 2015, Major Lambuth graduated from MCCC with Honors, received the Colonel Ralph Puckett Leadership Award, and was selected as a Liaison Officer for a German/French Coalition Planning Exercise in Nice, France. Following MCCC, Major Lambuth was assigned to the Amphibious Vehicle Test Branch (AVTB), Camp Pendleton, California, as the Operations Officer. At AVTB, Major Lambuth planned and executed Developmental Tests on the Amphibious Assault Vehicle Survivability Upgrade Program (AAV-SU) and the Amphibious Combat Vehicle (ACV) Increment 1.1 Phase. In November 2017, Major Lambuth was assigned to 3d Assault Amphibian Battalion (3d AA Bn) where he served as the S-4 Officer in Charge and Company A Company Commander. From May to November 2019, Major Lambuth deployed Company A to Okinawa, Japan, in support of Unit Deployment Program 19.2.

In April 2020, Major Lambuth was promoted to the rank of Major and executed orders to 4th Assault Amphibian Battalion (AA Bn). While assigned to 4th AA Bn, Major Lambuth served as the Inspector-Instructor for Company B in Jacksonville, Florida. In this assignment, he deployed USMCR Marines to CENTCOM and INDOPACOM theaters to support Global Force Management requirements. In June 2023, Major Lambuth reported to the Naval War College in Newport, Rhode Island, where he completed the College of Naval Command and Staff. In June 2024, Major Lambuth was assigned to 2d Assault Amphibian Battalion (2d AA Bn) where he currently serves as the Battalion Executive Officer.

Major Lambuth holds a Bachelor of Arts in Business Management from the University of Southern Mississippi, a Master of Arts in Management and Leadership from Liberty University, and a Master of Arts with Distinction in Defense Strategic Studies from the Naval War College. His personal awards include the Meritorious Service Medal, the Navy and Marine Corps Commendation Medal (1 gold star), and the Navy and Marine Corps Achievement Medal (1 gold star).