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I Marine Expeditionary Force
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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. 


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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Photo Information

MARINE CORPS BASE CAMP PENDLETON, Calif. - Staff Sgt. Albert Macklin, a battery local security chief with Battery Q, 5th Battalion, 11th Marine Regiment, I Marine Expeditionary Force and New Orleans native, helps coordinate 360-degree security during Spring Fire Exercise at Camp Pendleton March 31, 2016. During the combined-arms training exercise, Macklin and other Marines helped coordinate where all security posts were, along with securing the various parts of the range in accordance with where the battery was firing. (U.S. Marine Corps Photo by Cpl. Demetrius Morgan/RELEASED)

Photo by Cpl. Demetrius Morgan

Always Ready: Artillery Regiment Shakes Things Up during Spring Fire Exercise

8 Apr 2016 | Cpl. Demetrius Morgan I Marine Expeditionary Force

The 11th Marine Regiment, 1st Marine Division, which consists of four artillery battalions and a headquarters battalion, put their skills to the test during a large-scale, combined-arms training Spring Fire Exercise at Camp Pendleton, March 30-April 2, 2016.    

Since its origin, the 11th Marine Regiment has served as the Marine Corps’ long-range artillery threat, able to engage targets from miles away in support of the ground combat element. Marines within the regiment have trained in particular aspects pertaining to coordinating and executing fire missions.   

“So far, we have done smaller scale exercises to work on specific things involving what we do,” said Staff Sgt. Albert Macklin, a battery local security chief with 5th Battalion, 11th Marine Regiment. “This time we are putting everything together and operating as a single entity instead of separate companies trying to work out the kinks.”   

Macklin, a New Orleans native, added the end state for the exercise was to hone and maintain the unit’s ability to plan and execute artillery fires, which includes support coordination with adjacent friendlies, establishing communications using High Frequency radios and antennas, and supporting the regiment's command and control process. 
Fire missions were coordinated and called at random intervals by the headquarters element, while Marines manning the artillery weapons were ready to fire swiftly and accurately upon command. Macklin added that Marines are also capable of moving their respective artillery weaponry to any location, dismount from their vehicles and still fire rounds down range in a timely manner.   

“We move quickly I’ll tell you that,” said Macklin. “One of our strong points, especially when we are talking about getting off as many rounds as possible, is our ability to complete the mission as fast as possible. It’s our bread and butter and it’s what makes us an asset to anyone we support.”

During the evolution, each battalion moved to different locations on a frequent basis in order to simulate positions they would hold given their circumstances. Marines do this as fast as possible, so they can engage targets in a timely manner. Although setting up and breaking down quickly can be a tedious process, Marines recognize the significance of rehearsing this procedure.     

“It’s tough breaking down a everything,” said Sgt. Jonathan Gonzalez, a High Mobility Artillery Rocket System Operator with 5/11. “It can get discouraging sometimes when we have to change locations and it feels like we just got set up. You just got to get into that mindset that it’s all for a purpose and in a real situation we need to be as fast as possible.”    
Although field exercises can be physically and mentally exhausting, Marines were proud to be a part of the exercise and the regiment as a whole.  

“These guys are definitely dedicated in what they do and they work hard, that’s all I can really ask for,” said Macklin.  

Spring Fire Exercise is one of the many training evolutions the Marine Corps conducts to adhere to the highest standard of operational performance. The regiment will continue to train its Marines to perform at the highest level in any clime and place in preparation for future deployments and operations.

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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