Expeditionary Force 21 provides guidance for how the Marine Corps Total Force-as an integral part of the larger naval and joint team-will be postured, organized, trained, and equipped to fulfill assigned public law and national policy responsibilities. Expeditionary Force 21 does not change what Marines do, but how they will do it. Expeditionary Force 21 draws guidance from national security direction and naval strategy as described by A Cooperative Strategy for 21st Century Seapower. Expeditionary Force 21 will be integrated with the Marine Corps Service Campaign Plan 2014-2022 and Marine Corps Strategic Health Assessment.