1st Marine Division
1st Mar Div Logo
I Marine Expeditionary Force
Camp Pendleton, California

Who we are

The 1st Marine Division is the oldest, largest and most decorated Marine division. Headquartered at Camp Pendleton, California, the Division is a force of 22,000 men and women organized to conduct combat operations. The 1st Marine Division is an adaptable expeditionary force in readiness; generating, deploying and returning forces in support of global force management. The Division stands ready to conduct contingency response requirements and is prepared to deploy as a scalable ground combat element to defeat peer, near-peer and hybrid threats across the range of military operations.


1st Marine Division finishes strong at Exercise Talisman Sabre 23

U.S. Marines and Sailors with 1st Marine Division returned from Australia on Aug. 6 after participating in Exercise Talisman Sabre 23. The exercise...


Pacific-focused, globally ready: 1st Marine Division’s impact reinforces ‘no better friend, no worse enemy’

Blue Diamond Marines and Sailors will train in, and work closely with teammates from Australia, Brazil, France, Indonesia, Japan, Mexico, the...


Secretary of Defense, allied leaders visit with 1st Marine Division at Talisman Sabre 23

World leaders including U.S. Secretary of Defense Lloyd J. Austin III and Australian Deputy Prime Minister Richard Marles, visited with U.S. Marines...


11th Marine Regiment activates first long-range missile battery

In a historic event at Marine Corps Base Camp Pendleton, California, the 11th Marine Regiment, 1st Marine Division activated the Marine Corps’ first...


1st Marine Division deploys to Australia for Exercise Talisman Sabre 23

U.S. Marines and Sailors from the 1st Marine Division, I Marine Expeditionary Force in Camp Pendleton, Calif., deployed to Australia on July 17 to...


5th Marine Regiment hosts change of command ceremony for the historic "Fighting Fifth"

U.S. Marine Corps Col. Christopher Steele turned over the Marine Corps’ most decorated regiment on June 23 to Col. Brian Mulvihill following two...


Faces of the Blue Diamond: Lt. Cmdr. Charles Ferguson

U.S. Navy Lt. Cmdr. Charles Ferguson assumed the responsibilities as the battalion chaplain for Headquarters Battalion, First Marine Division in 2021.


1st Marine Division hosts morning colors ceremony

U.S. Marine Corps Maj. Gen. Benjamin T. Watson, the commanding general of the 1st Marine Division, officially established a force preservation team...


3rd Bn., 4th Marines deactivates weapons company, reinforces rifle companies as part of IBX-30

3rd Battalion, 4th Marine Regiment, 1st Marine Division deactivated its weapons company during a ceremony June 1 at Marine Corps Air Ground Combat...


Navy leaders visit Blue Diamond Marines

U.S. Navy Rear Adm. Randall Peck, the prospective commander for Expeditionary Strike Group 3, ESG 3 Command Master Chief Jasen Williams, and officers...

Marines with 3rd Assault Amphibian Bn. take part in Bright Star 23
1st Marine Division
Sept. 15, 2023 | 2:41
Marines with 3rd Assault Amphibian Bn. take part in Bright Star 23
1st Marine Division
Sept. 15, 2023 | 2:41
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Marines with 3rd Assault Amphibian Bn. take part in Bright Star 23
1st Battalion, 4th Marines; Chilean naval infantry conduct bilateral cold weather training
U.S. Marines Participate in Talisman Sabre 23
U.S., Philippine Marines participate in Marine Aviation Support Activity
2nd Bn., 11th Marines becomes first Marine unit to fire NMESIS missiles


1st Marine Division