I Marine Expeditionary Force

When directed, I MEF deploys and is employed as a Marine Air Ground Task Force (MAGTF) in support of Combatant Commander (COCOM) requirements for contingency response or Major Theater War; with appropriate augmentation, serves as the core element of a Joint Task Force (JTF); prepares and deploys combat ready MAGTF’s to support COCOM presence and crisis response; and supports service and COCOM initiatives as required. (Learn More)

III Marine Expeditionary Force

As the "Tip of the Spear," Marines on Okinawa are here in support of the U.S./Japan Security Treaty, providing for the mutual defense of Japan and ensuring regional security. Although home based on Okinawa, units and personnel here may often spend much of their time training in other countries, taking part in the numerous exercises throughout the Pacific. Marines can be spotted training in the searing heat in the jungles of Thailand or on the cruel frozen slopes and tundra of Mt. Fuji, Japan and Alaska. (Learn More)


U.S. Marine Corps Forces, Pacific