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

Mission

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. 

 

Exercise Croix du Sud 2023
1st Marine Logistics Group
May 6, 2023 | 1:43
Exercise Croix du Sud 2023
1st Marine Logistics Group
May 6, 2023 | 1:43
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Exercise Croix du Sud 2023
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Photo Information

U.S. Marines with Alpha Company, 1st Law Enforcement Battalion, I Marine Expeditionary Force Information Group, aim at potential threats during dismounted patrols and detainee operations at De Luz Combat Town at Camp Pendleton, June 5, 2019. Company A participated in detainee operations and patrolling to prepare its Marines with the knowledge required to operate in a deployed environment. (U.S. Marine Corps photo by Cpl. Rachel R. Mendieta)

Photo by Cpl. Rachel Mendieta

Whatcha gonna do when they come for you?

1 Jul 2019 | Cpl. Rachel Mendieta I Marine Expeditionary Force

U.S. Marines with Alpha Company, 1st Law Enforcement Battalion, I Marine Expeditionary Force Information Group, conducted a military police operations field exercise at Camp Pendleton’s De Luz Combat Town June 3-6, 2019.
 
This exercise increased the readiness of the company and prepared them for the 2019 third Quarter Battalion field exercise.
 
“Just about once a month we focus on some form of military police operations,” said 1st Lt. Garrett Gundy, Alpha Company executive officer, 1st LE Bn. “This month and this quarter is focused on detention operations and mobility security support.”
 
During the exercise, Marines patrolled the De Luz Combat Town, interacting with role-players to simulate being in a deployed environment.
 
“I think the role players [add immersion] to both situations of detainee operations and patrolling; it just gives the added effect of chaos,” said Sgt. Brandon Gammons, squad leader, A Co., 1st LE Bn. “It teaches our Marines how to mitigate that chaos, handle the situation and act appropriately.”
 
The Marines performed mounted and dismounted patrols, entry control point security, and reacted to simulated enemy fire to include blank rounds, flash bang grenades and mock roadside bombs.
 
“I hope my Marines gained more knowledge of both detainee operations and patrolling in order to prepare for the battalion final exercise,” said Gammons.
 
1st LE Bn. will be conducting a battalion wide exercise at the end of the fiscal year in September. By doing monthly exercises such as this one, the companies will be able to perform with enhanced readiness and proficiency, according to Gundy.

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I MEF Leaders

Lt. Gen. George W. Smith Jr.
Commanding General, I Marine Expeditionary Force

Lieutenant General Smith was commissioned through the NROTC program at the University of North Carolina at Chapel Hill in May 1985. A career infantry officer, his assignments in the operating forces include Rifle Platoon Commander and 81mm Mortar Platoon Commander in 2d Battalion, 1st Marines; Logistics Officer and Rifle Company Commander in 1st Battalion, 3d Marines; and Commanding Officer, 1st Force Reconnaissance Company, during which he deployed twice in support of Operation Iraqi Freedom.

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Brig. Gen. Ryan S. “Chick” Rideout
Deputy Commanding General, I Marine Expeditionary Force

Brigadier General Rideout assumed duties as Deputy Commanding General, I Marine Expeditionary Force in July 2021. His previous assignment was serving as Director, Military Advisor Group, Combined Joint Task Force - Operation INHERENT RESOLVE based in Baghdad, Iraq from June of 2020 to June 2021. Fleet Marine Force assignments include: Commanding

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Colonel Brian Rideout
Chief of Staff, I Marine Expeditionary Force

Colonel Rideout holds a baccalaureate degree in Psychology from Ohio Wesleyan University, a Master of Science in Information Technology Management from the Naval Postgraduate School, a Master of Military Studies from Marine Corps University and a Master of Arts in National Security and Strategic Studies from the Naval War College.  He is a graduate

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Sergeant Major Peter A. Siaw
Command Senior Enlisted Leader, I Marine Expeditionary Force

Sergeant Major Peter A. Siaw was born in Chicago, Illinois and began recruit training in April 1993 aboard Marine Corps Recruit Depot San Diego, California. Upon graduation, he was meritoriously promoted to the rank of Lance Corporal and continued to Marine Combat Training aboard Camp Pendleton, California, and Personnel Administration School

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CMDCM(FMF/SW/AW/IW) Charles F. Ziervogel
Command Master Chief

Master Chief Ziervogel enlisted in the Navy in August of 1989. Following Basic Training in Orlando, Florida he successfully completed the Navy Nuclear Power Training Pipeline. From October 1991 to December 1996 he served as a member of Reactor Control Division onboard USS Nebraska (SSBN 739 Gold) through New Construction and Commissioning,

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I Marine Expeditionary Force