In August of 2005 Lorenzo A. Hernandez entered the Marine Corps and underwent recruit training at Second Recruit Training Battalion, Marine Corps Recruit Depot San Diego, California. Upon graduating from boot camp, he was meritoriously promoted to Private First Class. Sergeant Major Hernandez reported to Infantry Training Battalion, School of Infantry, Camp Pendleton, California for training at Infantry Training Battalion. Upon completion of SOI training Sergeant Major Hernandez received the MOS 0311 / 0313 (Infantry Rifleman / LAV Crewman).
On April 15, 2006, Sergeant Major Hernandez was assigned to 2nd Light Armored Reconnaissance Battalion in Camp Lejeune, North Carolina. During this tour he deployed to Rajah, Iraq in support of Operation Iraqi Freedom 681. In March 2008 Sergeant Major Hernandez re-deployed to Arupa, Iraq in support of Operation Iraqi Freedom 7-9. In November 2009 Sergeant Major Hernandez deployed to Helmand Provence, Afghanistan in support of Operation Enduring Freedom. While with 2nd LAR Bn Sergeant Major Hernandez climbed through the ranks to Sergeant and he served as Rifleman, LAV-25 Gunner, Scout Team Leader, and Squad Leader.
In July of 2010 Sergeant Major Hernandez requested orders to Marine Corps Recruit Depot San Diego, California. While serving as a Drill instructor for 2nd Battalion, Hotel Company, he was meritoriously promoted to the rank of Staff Sergeant. While their Sergeant Major Hernandez filled the billets of a drill instructor, senior drill instructor, assistant operations chief, and battalion drill master.
In August of 2013 Sergeant Major Hernandez was transferred to 2nd Battalion 7th Marines in 29 Palms, California. During this tour he deployed to Kuwait in support of Special Purpose Marine Air Ground Task Force, Central Command, Crisis Response. While with V2/7 he served as platoon commander, rifle platoon sergeant, weapons platoon sergeant and company gunnery sergeant.
In November of 2015 Sergeant Major Hernandez was selected for the Marine Corps Personnel Exchange Program and received orders to Marine Forces Southern Command where he served as the PEP assigned to the Brigada Amphibia Expeditionary, G-3 Operations/Training section SNCO, Infanteria de Marina Chile. In April 2017 Sergeant Major Hernandez was meritoriously promoted to Gunnery Sergeant.
In October of 2018 Sergeant Major Hernandez was assigned to 2nd Marine Regiment Headquarters Company in Camp Lejeune, North Carolina. While with Headquarters Company, Sergeant Major Hernandez served as the Company 1stSgt. In May of 2018 Sergeant Major Hernandez was transferred to 2nd Battalion 2nd Marines where he served as the company gunnery sergeant for Easy company and deployed twice to Okinawa, Japan UDP 19.2 and 20.1.
In May 2021 Sergeant Major Hernandez was promoted to First Sergeant and assigned to 7th Engineer Support Battalion Company C as the company First Sergeant. In April 2022 Sergeant Major Hernandez was assigned to Bulk Fuel Company where he served as the Bulk Fuel Company First Sergeant. In January 2023 Sergeant Major Hernandez was assigned to Company B as the company First Sergeant. In September 2023 Sergeant Major Hernandez was assigned to Marine Combat Engineer Detachment- Palau where he served as the Task Force Company First Sergeant. In August 2024 Sergeant Major Hernandez was assigned to Headquarters and Service Company as the company First Sergeant. Sergeant Major Hernandez was selected to his current Grade in October of 2024 and received orders May 2025 to Support Battalion, Recruit Training Regiment, Marine Corps Recruit Depot San Diego, California.