I MEF Leaders

Commanding General, I Marine Expeditionary Force

Lieutenant General Michael S. Cederholm

Lieutenant General Michael S. Cederholm assumed command of I Marine Expeditionary Force (I MEF) in February 2024. He is the son of Colonel (USMC, Retired) and Mrs. Roger Cederholm. A native of Camp Lejeune, he grew up in New Hartford, Connecticut. After graduating from Wesleyan University,...

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Deputy Commanding General, I Marine Expeditionary Force

Brigadier General Michael R. Nakonieczny

Brigadier General Nakonieczny was born in Buena Park, California and is the son of a Marine. He earned a Bachelor of Arts from the University of California at Davis and was commissioned through the Platoon Leaders Course....

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Chief of Staff, I Marine Expeditionary Force

Colonel B. P. Sullivan

Colonel Sullivan is a native of Long Island, New York.  He attended Officer Candidate School and was commissioned as a Second Lieutenant following graduation from Iona College in May 1999.  He proceeded to Quantico, Virginia where he attended The Basic School and the Infantry Officer Course.In...

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Command Senior Enlisted Leader, I Marine Expeditionary Force

Sergeant Major Peter A. Siaw

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,...

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Command Master Chief

CMDCM (FMF/SW/AW) Loren D. Rucker

Command Master Chief Loren Rucker A native of Burley, Idaho, enlisted in the Navy in Aug. 1995. After graduating Operations Specialist “A” School, he was assigned to USS Paul F, Foster (DD 964) where he earned his Enlisted Surface Warfare Designation.Following his initial sea tour, he chose to...

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I Marine Expeditionary Force