I Marine Expeditionary Force

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Ready. Engaged. Faithful.
Official U.S. Marine Corps Website

Who we are

I MEF provides the Marine Corps a globally responsive, expeditionary, and fully scalable Marine Air-Ground Task Force (MAGTF), capable of generating, deploying, and employing ready forces and formations for crisis response, forward presence, major combat operations, and campaigns.

 

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01

MRF-D: 25.3: Mid-Deployment Message

U.S. Marines with Marine Rotational Force – Darwin 25.3 give a message for the mid-point of their deployment, July 7, 2025.  MRF-D is an annual...

02

MRF-D 25.3 conducts CMP unknown distance range

U.S. Marines and sailors with Headquarters Company, Marine Rotational Force – Darwin 25.3, participate in an unknown-distance combat marksmanship...

03

Navy Cross recipient Anthony L. Viggiani underscores importance of discipline and standards in combat

Retired U.S. Marine Corps Chief Warrant Officer 4 Anthony L. Viggiani discusses the importance of discipline and standards in a combat environment on...

04

MRF-D 25.3: Multinational forces conclude KAMANDAG 9

U.S. Marines with Marine Rotational Force – Darwin 25.3, I Marine Expeditionary Force Forward, Philippine Marines with 3rd Brigade, Soldiers with the...

05

Meet Your MRF-D: Part Three

U.S. Marine Corps Lance Cpl. Ryan Kelley, a radio systems operator, Sgt. Krystal Brandt, a data analyst, and Staff Sgt. Jeremiah Rogers, an explosive...

06

Clearing the Past, Protecting the Future: Operation Render Safe 25.1

U.S. Marines with Marine Rotational Force — Darwin 25.3, sailors and soldiers participate in Operation Render Safe 25.1 with service members from the...

07

MRF-D 25.3: 2nd Bn., 1st Marines completes Predator Series 2025

U.S. Marines with 2nd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 25.3, complete participating in Predator Series 2025 at Mount...

08

Operation Ironclad: Discipline Defines Us

U.S. Marines and Sailors throughout I Marine Expeditionary Force and Marine Corps Installations – West initiate Operation Ironclad, June 2, 2025....

09

KAMANDAG 9: U.S., Philippine Marines conduct counter-landing live-fire

U.S. Marines with 2nd Battalion, 1st Marine Regiment, Marine Rotational Force – Darwin 25.3, I Marine Expeditionary Force Forward, and Philippine...

10

U.S. Marines, Sailors dive into the deep end for water survival

U.S. Marines and Sailors with 1st Marine Division train to become water survival advanced-qualified at Marine Corps Base Camp Pendleton, California,...

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