Staff Sgt. Ronald Ramsey, a reconnaissance Marine with 3rd Reconnaissance Battalion, 3rd Marine Division, explains the challenges of the United States Marine Corps Combatant Diver Course and how it has helped build a stronger bond with our Japanese allies. (U.S. Marine Corps video by Cpl. Josue Marquez) | U.S. Marine Corps

Marines with 3rd Battalion, 2nd Marines, II Marine Expeditionary Force, maneuver through squad attack exercises at Camp Lejeune, North Carolina. Watch as Squad Leader Sgt. Alexander Johnson leads his Marines through the fundamentals of squad level tactics: buddy rushes. Watch More: https://youtu.be/6xp_-kWtipk | U.S. Marine Corps

US Marines from the 3rd Battalion, 3rd Marines clear a building in Fallujah, Iraq , 2007 | Hell on Earth

Today, we remember and honor the nearly 500,000 Marines who served our country during the Vietnam War. From 1965 to 1973, some of the Marine Corps’ most storied battles and operations took place in Vietnam, including the siege of Khe Sanh, the Battle of Hue City, and Operation Starlite. The tactical and operational lessons the Marine Corps learned throughout the conflict proved the efficacy of the Marine Air Ground Task Force Model and influenced the Corps’ warfighting doctrine in the decades th

Marines with 1st Battalion, 3rd Marine Regiment conduct an infantry squad test exercise on Marine Corps Base Hawaii to maintain readiness amid the COVID-19 pandemic, April 16. (U.S. Marine Corps video by Cpl. Eric Tso) | U.S. Marine Corps

3rd Marine Division Sgt. Maj. Vincent Santiago from III MEF Marines, describes how a rainy day saved his life. Full Story: https://youtu.be/giiQBPQuP_Q | U.S. Marine Corps

Marines with 3rd Marine Division engage close range targets to increase their speed and lethality while focusing on shooting fundamentals. (U.S. Marine Corps video by Lance Cpl. Michael Jefferson Estillomo | U.S. Marine Corps

Marines with 3d Reconnaissance Battalion, 3rd Marine Division, dawn fresh gear and train to increase their ability to stay swift, silent and lethal with their new gear. (U.S. Marine Corps video by Cpl. Josue Marquez) | U.S. Marine Corps

Comradery and Combat Readiness Marines with, 1st Battalion, 3rd Marine Regiment, conduct a pre-deployment exercise for Exercise Bougainville II at Pohakuloa Training Area, Hawaii. (U.S Marine Corps video by Cpl. Eric Tso) | U.S. Marine Corps