Fourth Marine Division

U.S. Marine Corps Sgt. Kevin Manciavelez, an infantry squad leader with 2nd Battalion, 23rd Marines forward deployed with 4th Marine Regiment, 3d Marine Division as part of the Unit Deployment Program, commands fellow Marines during an assault of an underground tunnel with U.S. Army Soldiers with the 23rd Chemical Battalion during joint chemical, biological, radiological, and nuclear defense training during Korea Viper 25.4 at Camp Stanley, South Korea, May 20, 2025. Korea Viper is a recurring exercise series that demonstrates the Republic of Korea and U.S. Marine Corps' ability to respond decisively in the region as a singular, unified force while strengthening relationships and trust between the two allies. Manciavelez is a native of California. (U.S. Marine Corps photo by Lance Cpl. Tucker Mocan)

U.S. Marines with 14th Marine Regiment, 4th Marine Division, Marine Forces Reserve, conduct a regimental fire exercise across the United States, June 4-11, 2025. FIREX is a regiment level exercise designed to increase mission capabilities and enhance operational readiness. (U.S. Marine Corps video by Cpl. Kanoa Thomas)

U.S. Marines with 3rd Battalion, 14th Marine Regiment, 4th Marine Division fire a M777 howitzer during a live-fire evolution as part of Integrated Training Exercise 3-25 (ITX 3-25) on Marine Air Ground Combat Center, Twentynine Palms, California, June 6, 2025. ITX is a critical Marine Air-Ground Task Force exercise for the Marine Forces Reserve’s training cycle, confirming unit readiness through live-fire and combined arms integration. (U.S. Marine Corps photo by Staff Sgt. Scott Jenkins)

U.S. Marine Corps Cpl. Edwin Cruz-Portillo, a M142 High Mobility Artillery Rocket System operator with Fox Battery, 2nd Battalion, 14th Marine Regiment, 4th Marine Division, guides his vehicle to a firing position during a live fire exercise in support of exercise Baltic Operations 2025 (BALTOPS 25) in Klaipeda, Lithuania, June 6, 2025. BALTOPS 25, the premier maritime-focused exercise in the Baltic Region, provides a unique training opportunity to strengthen combined response capabilities critical to preserving freedom of navigation and security in the Baltic Sea. (U.S. Marine Corps photo by Lance Cpl. Van Hoang)

Two U.S. Marine Corps M142 High Mobility Artillery Rocket System with Fox Battery, 2nd Battalion, 14th Marine Regiment, 4th Marine Division, fire a rocket during a fire mission in support of exercise Baltic Operations 2025 (BALTOPS 25) in Klaipeda, Lithuania, June 5, 2025. BALTOPS 25, the premier maritime-focused exercise in the Baltic Region, provides a unique training opportunity to strengthen combined response capabilities critical to preserving freedom of navigation and security in the Baltic Sea. (U.S. Marine Corps photo by Lance Cpl. Van Hoang)

U.S. Marines with 1st Battalion, 25th Marines, 4th Marine Division and Chilean marines participate in a live fire exercise during Southern Star 25, at Fuerte Aguayo, Chile, May 29, 2025. Southern Star is a multinational training exercise emphasizing operational and tactical missions, bringing together joint, combined, interagency, and military forces to strengthen coordination and interoperability within a unified special operations command. (U.S. Marine Corps photo by Lance Cpl. Payton Goodrich)

U.S. Marines with Golf Company, 2nd Battalion, 7th Marine Regiment, 1st Marine Division, observe a Chilean Marine firing his rifle during Exercise UNITAS LXV at Puerto Aldea, Chile, Sept. 3, 2024. UNITAS 2024 is a Chilean hosted, combined naval forces with integrated partner nations designed to increase the readiness of all participating forces, improve regional security and interoperability, strengthen partnership in the region and foster innovation and experimentation. (U.S. photo by Lance Cpl. Logan Courtright)

4th Marine Division celebrates the Relief and Appointment of Sgt. Maj. Christopher J. Adams and welcomes Sgt. Maj. Garett G. Kirkby, Marine Corps Support Facility New Orleans, Louisiana, Apr 4, 2025. The Relief and Appointment signifies the passing of authority from the outgoing Sergeant Major to the oncoming Sergeant Major. (U.S. Marine Corps photo by Sgt. Ethan A. Green)

U.S. Marines with Communication Company, 14th Marine Regiment, 4th Marine Division, prepare for a casualty evacuation (CASEVAC) involving a simulated casualty for a joint communications exercise with the 38th Combat Aviation Brigade, Indiana National Guard in Camp Atterbury, Edinburgh, Indiana, March 14, 2025. The joint communications exercise tested the Marines’ ability to rapidly deploy and establish secure communications in an operational environment. Upon insertion via UH-60 Black Hawk helicopters, radio teams established encrypted high-frequency networks with the combat operations center, coordinated simulated medical evacuations, and executed air extractions, demonstrating their capability to maneuver and communicate in dynamic conditions alongside joint force partners. (U.S. Marine Corps Photo by Maj. Lara Soto)

U.S. Marines are taught maneuvering techniques in a Multi Mission Reconnaissance Craft-A littoral craft during training at the U.S. Marine Corps Reserve Center, 4th Assault Amphibian Battalion in Tampa, Florida, March 4-7, 2025. The MMRC-A will allow Marines with 4th AABN, 4th Marine Division, to develop operational small craft expertise and proficiency to execute their mission to support the Marine Corps Total Force. (U.S. Marine Corps video by Cpl. Isaiah W. Smith) By License - This video contains audio from a USMC enterprise licensed asset from Adobe Stock: "Intense Action Soundtrack Suspense Intro" by ChillSound / https://stock.adobe.com/

U.S. Marine Corps Lance Cpl. Sizwile Nyoni, a satellite communications operator with Detachment, Communication Company, 14th Marine Regiment, 4th Marine Division, provides security while Marines set up a field expedient high frequency (HF) antenna during a joint communications exercise with the 38th Combat Aviation Brigade, Indiana National Guard in Camp Atterbury, Edinburgh, Indiana, March 14, 2025. The joint communications exercise tested the Marines’ ability to rapidly deploy and establish secure communications in an operational environment. Upon insertion via UH-60 Black Hawk helicopters, radio teams established encrypted high-frequency networks with the combat operations center, coordinated simulated medical evacuations, and executed air extractions, demonstrating their capability to maneuver and communicate in dynamic conditions alongside joint force partners. (U.S. Marine Corps Photo by Maj. Lara Soto)