U.S. Marine Corps Forces Korea G-3/5/7 advises and assists the Commander in matters pertaining to organization, training, readiness, planning, and operational employment of MARFORK personnel.  In both component and service functions, the G-3/5/7 is structured and chartered to serve as the Commander's principal staff agency for the development and articulation of a wide spectrum of concepts, plans and policies; and to direct and supervise execution and/or implementation of those policies.