1st Marine Division

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U.S. Marines with 1st Battalion, 1st Marine Regiment, 1st Marine Division, hike through a simulated chemical attack at Marine Corps Base Camp Pendleton, California, Jan. 12, 2019. Marines trained in extreme environments in order to achieve maximum lethality during the intensity of future deployments. (U.S. Marine Corps photo by Cpl. Rhita Daniel)

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Soldiers from the 1st Amphibious Rapid Deployment Brigade, Japan Ground Self-Defense Force (JGSDF) conduct individual and small-unit maneuver exercises during Iron Fist at Marine Corps Base Camp Pendleton, California, February 6, 2019. Exercise Iron Fist is an annual, bilateral amphibious training exercise designed to improve U.S. Marine Corps and the JGSDF’s ability to plan, communicate and conduct combined amphibious operations.

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U.S. Marines with the 1st Marine Division (MARDIV) band, play during the division's 78th Anniversary Ceremony at Marine Corps Base Camp Pendleton, California, Feb. 1, 2018. 1st MARDIV veterans, Marines, Sailors, friends and family members celebrated the Division's heritage and lineage during the ceremony. (U.S. Marine Corps photo by Lance Cpl. Ryan Kierkegaard)

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U.S. Marine Corps Maj. Gen. Robert F. Castellvi, the commanding general of 1st Marine Division (MARDIV), shakes hands with a veteran of the division during the 1st MARDIV 78th Anniversary Ceremony at Marine Corps Base Camp Pendleton, California, Feb. 1, 2018. 1st MARDIV veterans, Marines, Sailors, friends and family members celebrated the Division's heritage and lineage during the ceremony. (U.S. Marine Corps photo by Lance Cpl. Ryan Kierkegaard)

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U.S. Marine Corps Sgt. Maj. Terrence C. Whitcomb, the sergeant major of 1st Marine Division (MARDIV), gives a tour of the unit's Headquarters Building to Division veterans during the week of the 1st MARDIV 78th anniversary at Marine Corps Base Camp Pendleton, California, Feb. 1, 2019. The building, commonly referred to as the white house, has been the workplace for numerous commanding generals and staffs of the 1st MARDIV. (U.S. Marine Corps photo by Sgt. Miguel A. Rosales)

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A U.S. Marine gives the Japan Ground Self-Defense Force Soldiers with 1st Amphibious Rapid Deployment Regiment, the go ahead for the assault amphibious vehicles to enter the water and travel to the USS Somerset (LPD 25) during Iron Fist 2019, Jan. 30 on U.S. Marine Corps Base Camp Pendleton, CA. Exercise Iron Fist is an annual, multilateral training exercise where U.S. and Japanese service members train together and share techniques, tactics and procedures to improve their combined operational capabilities. (U.S. Marine Corps photo by Cpl. Cutler Brice)

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Retired U.S. Marine Corps Sgt. Maj. Paul Stephenson participates as part of a 1st Marine Division 78th Anniversary feature collection at Marine Corps Base Camp Pendleton, California, Jan.14, 2019. Stephenson served 32 years and fought with 1st Amphibian Tractor Battalion, 1st Marine Division, during the Korean War. (U.S. Marine Corps photo by Lance Cpl. Roxanna Gonzalez)

U.S. Marines and Sailors assigned to 1st Marine Logistics Group and Japan Ground Self-Defense Force Soldiers with 1st Amphibious Rapid Development Regiment, Move simulated casualties to a MV-22B Osprey tiltrotor aircraft for medical evacuation training during Iron Fist,

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Jan. 22, 2019 on U.S. Marine Corps Base Camp Pendleton, CA. Exercise Iron Fist is an annual, multilateral training exercise where U.S. and Japanese service members train together and share techniques, tactics and procedures to improve their combined operational capabilities. (U.S. Marine Corps photo by Cpl. Cutler Brice)

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U.S. Marines with 1st Marine Division assist in the filming of television show “SEAL Team” on Marine Corps Base Camp Pendleton, Calif., Jan. 14, 2019. Camp Pendleton has been used as a filming site by a number of shows and movies in order to replicate the realism of the U.S. military services. (U.S. Marine Corps photo by Cpl. Joseph Prado)

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U.S. Marine Corps Cpl. Gerardo, Parra, an Assault Breacher Vehicle Joint Assault Bridge Operator, with 1st Combat Engineer Battalion, 1st Marine Division poses for a photo during exercise Steel Knight (SK) 2019 at Marine Corps Air Ground Combat Center, Twentynine Palms, California, Nov. 28, 2018. SK is an annual exercise used to showcase the Marines and Sailors skills, tactics, and combat readiness by performing in various dynamic scenarios, ground combat maneuver operations, and liver fire ranges. (U.S. Marine Corps photo by Sgt. Miguel A. Rosales)

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A U.S. Marine drinks water from a canteen during exercise Steel Knight (SK) 2019 at Marine Corps Base Camp Pendleton, California, Dec. 2, 2018. SK is an annual exercise used to enhance the Marines' and Sailors skills, tactics, and combat readiness by performing in various dynamic scenarios, ground combat maneuver operations, and l'ive fire ranges. (U.S. Marine Corps photo by Pfc. Frank Cordoba)

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U.S. Marine Corps SSgt. Derek Andreas, an assault amphibious vehicle crewmember with 3D Assault Amphibian Battalion, participates in the final event of exercise Valiant Mark at Marine Corps Air-Ground Combat Center Twentynine Palms, Calif. Sept. 09, 2018. Valiant Mark is an annual exercise conducted by U.S. Marines and the Singapore Armed Forces designed to increase interoperability and strengthen military-to-military relationships through combined-arms integration training. (U.S. Marine Corps photo by LCpl. Rhita Daniel)

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U.S. Marine Corps Lance Cpl. John Marino, a machine gunner with 1st Marine Regiment, climbs over a log during the obstacle course portion of the 1st Marine Division (MARDIV) Super Squad Competition at Marine Corps Base Camp Pendleton, California, Aug. 30, 2018. The competition tests the Marines in a broad spectrum of infantry related skills to include offensive and defensive operations, patrolling techniques, and combat marksmanship, to determine the best squad within 1st MARDIV. (U.S. Marine Corps photo by Lance Cpl. Audrey M.C. Rampton)

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U.S. Marines run through CS gas during the hike portion of the 1st Marine Division (MARDIV) Super Squad Competition at Marine Corps Base Camp Pendleton, California, Aug. 30, 2018. The competition tests the Marines in a broad spectrum of infantry related skills to include offensive and defensive operations, patrolling techniques, and combat marksmanship, to determine the best squad within 1st MARDIV. (U.S. Marine Corps photo by Lance Cpl. Audrey M.C. Rampton)

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The photo depicts the 1st Marine Division Headquarters Building on Marine Corps Base Camp Pendleton, California, May 17, 2018. The building, commonly referred to as the white house, has been the workspace for numerous commanding generals and special staff of the 1st Marine Division. (U.S. Marine Corps photo by Cpl. Joseph Prado)

Today, 1st Marine Division is a multi-role, expeditionary ground combat force. The Division is employed as the ground combat element (GCE) of I MEF or may provide task-organized forces for assault operations and such operations as may be directed. The 1st Marine Division must be able to provide the ground amphibious forcible entry capability to the naval expeditionary force (NEF) and to conduct subsequent land operations in any operational environment.

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1st Battalion, 11th Marines participates in CMP

U.S. Marines with 1st Battalion, 11th Marine Regiment, participated in a Combat Marksmanship Program (CMP) range on Marine Corps Base Camp Pendleton, California, Sept. 2, 2020. The CMP improves the unit’s effectiveness in the areas of marksmanship and basic field skills. (U.S. Marine Corps video by Sgt. Courtney G. White)

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