Lieutenant General (LtGen) James N. Mattis served as the Commanding General, First Marine Expeditionary Force (I MEF), Marine Air Ground Task Force (MAGTF) from June 2, 2006 through November 5, 2007.

A blunt-talking former Camp Pendleton general who got into hot water in 2005 for saying it was "fun to shoot some people" returned to the base to assume the reins of the I Marine Expeditionary Force.