Sergeant Major Matthew D. Younger is a native of Fort Myers, FL. He graduated from Fort Myers High School in 2000. Younger joined the delayed entry program in 2002, and reported to Marine Corps Recruit Depot (MCRD) Paris Island in 2003. Upon graduation with a rank of Private First Class he reported to the School of Infantry East (SOIE) to continued his training and acquired his primary Military Occupational Specialty (MOS) of 0352 - Antitank Missile Gunner. After completing his MOS requirements, Private First Class Younger was transferred to Headquarters & Service (H&S) Company, Detachment 1 - TOW/Scout Anti-armor Company, 8th Tank Battalion, 4th Marine Division, Hialeah Florida.
In 2005, Lance Corporal Younger was mobilized in support of Operation Iraqi Freedom (OIF) and was assigned to Regimental Combat Team 8, Weapons Company, Scout Platoon, Fallujah, Iraq. During this deployment, Lance Corporal Younger served an anti-armor gunner during convoy operations, and forward observation base security. In a subsequent assignment, Lance Corporal Younger reported to Al Amiriyah, Iraq where he served as Amphibious Assault Vehicle provisional infantry.
Shortly after return, in 2006, Lance Corporal Younger was assigned to H&S Company, Detachment 4 - TOW/Scout Anti-armor Company, 4th Tank Battalion, 4th Marine Division, Hialeah Fl after the 8th Tank Battalion deactivation. From 2005 to 2009, Lance Corporal Younger served as the Drug Demand Reduction Program Officer, and Counter-Radio Electronic Warfare Specialist. During this period, he was promoted to the rank of Corporal and to the rank of Sergeant. Sergeant Younger would hold the billets of Scout Section Leader, and TOW Platoon Sergeant. Sergeant Younger would go on to participate in Mountain Training, Bridgeport, CA in 2007 and Enhanced Mojave Viper, 29 Palms CA in 2008.
In 2009, Sergeant Younger executed orders to mobilize for support of OIF with 3rd Battalion 24th Marines, Weapons Company, Scout Platoon, Al Asad, Iraq. During this deployment, Sergeant Younger served a Personal Security Detail Section Leader. In 2010, Sergeant Younger continued to serve in Al Asad, Iraq as an anti-armor gunner and Section leader during convoy operations. Sergeant Younger served as a Saber Platoon Commander during post-deployment and promoted to the rank of Staff Sergeant. During this period, Staff Sergeant Younger graduated the CBRN Collateral Duty Course, and Infantry Unit Leader Course earning the MOS of 0369.
In 2012, Staff Sergeant Younger reported to Agadir, Morocco and was assigned to the 14th Marine Regiment as a Scout Platoon Sergeant in support of Exercise African Lion. Upon his return from Africa, Staff Sergeant Younger assisted the transition of Detachment 4 into the 4th Civil Affairs Group as the Company Gunny.
Between 2013 and 2018, Staff Sergeant Younger graduated the Civil-Military Operations School, Joint Humanitarian Operations Course, and reported to 4th Civil Affairs Group, Detachment 4, as a Detachment Chief. Staff Sergeant Younger participated in numerous Civil Affairs mission in support of USSOUTHCOM including Honduras in support of JTF-B, Belize in support of Persistent Presence, Jamaica in support of Tradewinds, Guatemala in support of Continuing Promise, and Panama in support of Panamax. Staff Sergeant Younger was assigned as the Operations Chief, and subsequently graduated the Civil-Military Planners Course, and G9 Branch and promoted to the rank of Gunnery Sergeant.
In 2018 Gunnery Sergeant Younger reported to II MEF, Marine Information Group (MIG), Trondheim, Norway as the G9 Branch Chief, and cross assigned to the G39 FECC in support of Trident Juncture. In 2019 Gunnery Sergeant Younger was selected to First Sergeant, and in 2020 reported to 4th Amphibious Assault Battalion (AABN), Company D, Tampa, FL where he served as the company's Unit Senior Enlisted Leader. In 2023, First Sergeant Younger reported to 3rd Amphibious Assault Battalion, Cairo, Egypt in support of Exercise Bright Star. Upon return, First Sergeant Younger committed to a second tour to facilitate the deactivation of Company D, and the commissioning of the Littoral Craft Company Delta.
In 2024, First Sergeant Younger was selected to Sergeant Major, and reported to 4th AABN, Headquarters Company as the Battalion Sergeant Major [acting]. Sergeant Major Younger is currently assigned to 4th Air Naval Gunfire Liaison Company (4th ANGLICO), as the Command Senior Enlisted Leader.