I Marine Expeditionary Force
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Ready. Engaged. Faithful.
Official U.S. Marine Corps Website


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. 


In Any Time and Place
1st Marine Division
March 30, 2021 | 2:04
In Any Time and Place
1st Marine Division
March 30, 2021 | 2:04
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In Any Time and Place
Artemis Program
Artemis We Care
1st Marine Division 80th Anniversary
Artemis Program
Annie N. Graham: First African-American Woman to Join the Marine Corps
1stMARDIV CG receives COVID-19 Vaccine
V17: Sergeants Lead the Way
Dawn Blitz/Steel Knight 21: Ship-to-Shore Ops
Transitioning Out of the Military and Adjustment Disorders
Support To the MAGTF
I MEF Holiday Message
MCCRE Teaser
I MEF Sleeves Down Reminder
Free and Open Indo-Pacific
Keeping a Tactical Mindset
Veterans Day with 2/11
Veterans Day with 2/11
Veterans Day with 2/11
1st Marine Division Change of Command
Charlie Company MCCRE
Supersquad 2020
Battalion Landing Team 1/4 honors Marines, Sailor at memorial service
Chop and Drag | TF KM20 Combat Engineers repair airfield in Peleliu
SPMAGTF-CR-CC 20.2 Valkyrie Program Training
1st MLG Commanding General COVID-19 Anticipated School Closures Message
Pacific Presence I
Release the Fusion | EOD Marines with TF KM20 practice using an SRS Fusion
15th MEU Marines communicate beyond line of sight
15th MEU Marines conduct defensive cyber operations training
Navy Corpsman 122nd Birthday
Happy 4th of July from the 15th MEU!
Tough discussions with Lt. Gen. Osterman & Sgt. Maj. Porterfield
Close Air Support | San Clemente Island
CLB-5 Message for New Marine and Sailor's Families
Lt. Gen. Joseph Osterman PSA Addressing I MEF Policy Change
Lt. Col. Hyatt and Sgt.Maj. Childs Memorial Day Message
Before Saying "I Do" Premarital Training Guide
Road to Deployment Workshop
COVID-19 PSA: A Message From Major General Robert F. Castellvi
It's not just your health on the line
Paid In Full
I MEF & MCI-West Unified Response
Financial Planning amid COVID-19
COVID-19 Service Extensions
1st MLG Commanding General COVID-19 Message

I MEF Leaders

Lt. Gen. Karsten "Hazel" Heckl
Commanding General, I Marine Expeditionary Force

Lieutenant General Karsten "Hazel" Heckl assumed command of I Marine Expeditionary Force on 31 July 2020.A native of Stone Mountain Georgia, Lieutenant General Heckl graduated from Georgia State University and was commissioned in April 1988.  He was designated an unrestricted Naval Aviator in September 1990.Lieutenant General Heckl commanded Marine

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Brig. Gen. Thomas B. Savage
Deputy Commanding General, I Marine Expeditionary Force

Brigadier General Savage is currently serving as Deputy Commanding General I Marine Expeditionary Force. He is a graduate of California State University and was commissioned in August 1991. He has attended The Basic School, Infantry Officer Course, U.S. Army Infantry Captain Career Course, Marine Corps Command and Staff Course, the School of Advanced Warfighting, the Naval War College, and the United Kingdom Higher Command and Staff Course. He has also completed Army Ranger School, Army Airborne School, and the USMC Basic Reconnaissance Course.

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Colonel George C. Schreffler, III
Chief of Staff, I Marine Expeditionary Force

Colonel Schreffler was born and raised in Harrisburg, Pennsylvania. He graduated from the Virginia Military Institute with a bachelor of art’s degree in history and was commissioned a second lieutenant in May 1994. Following graduation from the Basic Officer Course and the Infantry Officer Course at Quantico, Virginia he reported to 2d Battalion,

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Sgt. Maj. James Porterfield
Sergeant Major, I Marine Expeditionary Force

Sergeant Major Porterfield is currently serving as Sergeant Major, I Marine Expeditionary Force.  He is a native of Jacksonville, Florida, enlisted in the Marine Corps in March 1989, and was assigned as a AV-8B Harrier Avionics Technician.  He has attended all required Marine Corps Resident Professional Military Education (PME) Courses, Army

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CMDCM(SW/AW/IW) Toby A. Ruiz
Command Master Chief

 Though a native of Montebello, California, Master Chief Ruiz calls Monte Vista, Colorado home.  He enlisted in the Navy in March 1991, reported to basic training at RTC Great Lakes, Illinois and completed Signalman “A” School at NTC Orlando, Florida.  After serving two tours as a collateral-duty Command Career Counselor in 2000 and 2003, he became

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