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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
MRF-D and ADF medical teams participate in combat care exercise
Recon Marines, Indonesian Korps Marinir participate in annual reconnaissance exercise
Hub, Spoke, Node: Delivering Combat Power Any Time, Any Place
11th MEU annual gas chamber
11th MEU Dine Out
13th MEU Cobra Gold 23 Non-Combatant Evacuation Operation
Fueled to Fight – CLR-17 Final Field Mess Evaluation
Year in Review: Celebrating 82 years of the Blue Diamond
VMM-161 Trains for Expeditionary Advanced Base Operations in the Bahamas
Faces of the Blue Diamond: Staff Sgt. Jessica Larsen
Reel: U.S. Marines breach, clear buildings
EOTG | Raid Leaders Course
On the Drums at the Rose Parade
Teaser: I MEF, ESG-3 conclude Exercise Steel Knight 23
Influenced on the court: basketball leads to a career in the Marines
CLR-1 Participates in the First Ever Mental Fitness Obstacle Course
I MEF: Any Clime, Any Place
CLR-17 Field Mess Evaluation
1st Bn., 7th Marines conducts battalion field exercise
U.S. Marines participate in ceremony to mark 80th anniversary of Battle of Guadalcanal
Summer Fury 22: HMLA-267
80 years later, Marine remembers Guadalcanal
Red Ex: Australia Edition
Marines test deployment capabilities as part of REDEX
MRF-D 22: Darrandarra
MRF-D 22: U.S. Marines, Australian Army, and Japan Ground Self-Defence Force Personnel Participate in Exercise Southern Jackaroo
MRF-D 22: We're Gonna Get You out of Here
Exercise Garnet Rattler Teaser
Exercise Crocodile Response: Helping Hands
Photo Information

U.S. Marines with Marine Air Control Squadron 4, Marine Air Control Group (MACG) 18, support command and control of aircraft at Andersen Air Force Base, Guam, June 13, 2022, in support of Valiant Shield 2022. Exercise Valiant Shield gives units like MACG-18 the opportunity to integrate with forces across the Indo-Pacific to train in successful employment and operations that demonstrate the strength and versatility of the Joint Force. (U.S. Marine Corps photo by Cpl. Tyler Harmon)

Photo by Cpl. Tyler Harmon

Valiant Shield 2022 Draws to a Close

18 Jun 2022 | 1st Lt. Jade Watkins U.S. Marine Corps Forces, Pacific

ANDERSEN AIR FORCE BASE, Guam – The ninth iteration of exercise Valiant Shield concluded June 17, 2022, following 12 days of joint operations at sea, in the air, on land, and in cyberspace.
Valiant Shield 2022 is a biennial, U.S.-only, joint Field Training Exercise (FTX) focused on integration between U.S. forces in relation to current operational plans. This training enables real-world proficiency in sustaining joint forces through detecting, locating, tracking, and engaging adversary units.

The pinnacle event was the sinking exercise (SINKEX) on the decommissioned ex-USS Vandegrift (FFG 48). SINKEX featured a tightly synchronized sequence of live-fire events, demonstrating the joint forces' capability to deliver fires and effects in the maritime environment. This SINKEX provided the Joint Task Force the opportunity to test new weapons and communications technologies and rehearse the integration of cyber effects to conduct long-range, precise, lethal, and overwhelming multi-domain strikes against a surface target at sea.

“This exercise was the perfect opportunity to conduct integrated deterrence, which was the cornerstone of our approach,” said Rear Admiral Robb Chadwick, Valiant Shield 22 Joint Exercise Control Group Director. “We combined our efforts across all warfighting domains and the spectrum of conflict to ensure that the United States, alongside our allies and partners, could dissuade or defeat aggression in any form or domain.”

The exercise took place in the Joint Region Marianas area of operations including Palau, Naval Base Guam, Andersen Air Force Base, and in the off-shore Mariana Island Range Complex, with some training events also occurring in the Commonwealth of the Northern Mariana Islands.
“Forward presence matters,” said U.S. Navy Cmdr. Logan Ridley, lead planner for Valiant Shield 22. “Conducting Valiant Shield in the Western Pacific provided precise opportunities to exercise the Joint Task Force’s real-world tactical mission, execute long-range fires, and visualize those successes.”

Valiant Shield provides a venue to test current and new technologies and platforms, such as “multi-intelligence source artificial intelligence experiments,” which reinforce the military's current position as the supreme joint force. It also provides feedback used to guide the budget and acquisition process future fiscal years.

Marines from the III MEF brought the M142 High Mobility Artillery Rocket System (HIMARS) to perform a HIMARS Rapid Infiltration (HI-RAIN), where the Air Force National Guard provided a quick landing of their C-130 Hercules on the Republic of Palau. The inclusion of the HI-RAIN mission significantly increases the lethality of precision fires and survivability of the HIMARS launcher, crew, and aircraft due to the reduced exposure to hostile fires.

The 94th AAMDC conducted a Patriot missile live-fire exercise on Palau, a first for the island nation, as the U.S. Department of Defense continues to intensify its focus on the Indo-Pacific region. The Patriot is capable of defeating both high-performance aircraft and tactical ballistic missiles.
“One hundred percent successful,” said Brig. Gen. Mark Holler, commanding general of the 94th Army, Air and Missile Defense Command. “Everything went according to plan.”

Live-fire exercises are one of the most valuable ways for air defenders to train their craft. The ability to defend U.S. allies and partners is a part of the mission, and conducting training in different locations across the region allows the U.S. military to learn and improve their proficiency to support a free and open Indo-Pacific.

Navy Expeditionary Combat Command (NECC) demonstrated a myriad of its capabilities: expeditionary diving, maritime and port security, logistics support, construction, coastal patrol, explosive ordnance disposal, and Automated Construction of Expeditionary Structures (ACES). The unique capability of ACES included the operational demonstration of providing a concrete 3D printing capability, which is specifically designed for expeditionary environments.

The NECC exercised abilities to enable freedom of movement for the fleet and joint force by removing physical, manmade, and explosive threats that impede the joint force’s ability to maneuver, on land and sea.
All of this built to the dramatic conclusion of the Valiant Shield 2022 SINKEX. The military employs obsolete U.S. Navy ships for sinking exercises to train joint forces and to test the effectiveness of modern weaponry on ship design and aircraft.

SINKEX participants included Carrier Air Wing 5 embarked aboard the USS Ronald Reagan (CVN 76), who conducted long-range maritime strikes from fixed and rotary-wing aircraft. Seventh Fleet, embarked aboard the USS Tripoli (LHA 7), directed the task forces in the execution of a complete live-fire process. USS Benfold (DDG 65) launched a targeted surface-to-surface missile, which was a significant impact in the sinking of the Vandegrift. USS Key West (SSN 722), along with B-1B Lancers from the 28th Bomb Wing, and F-18s & F-35Bs from the Marine Fighter Attack Squadrons (VMFA-533 and VMFA-121) also participated in the SINKEX.

The planning for Valiant Shield 2024 has already begun, incorporating the lessons learned over the past two weeks so the Indo-Pacific joint forces can continue to ensure a Free and Open Indo-Pacific.


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