Col. Gary S. Johnston, Chief of Staff of II Marine Expeditionary Force, discusses Marine Corps warfighting during professional military education as part of MEFEX, a II MEF-level exercise, at Camp Lejeune, , Oct 16, 2015. The class focused on the Marine Corps Planning Process and is part of a series of War fighting a PME designed to prepare the II MEF staff for corps-level operations, combined-arms maneuver command and control, and Geographical Combatant Commander crises and contingency response requirements. ( Marine Corps photo by Pfc. Erick Galera/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: education, exercise, expeditionary, field, marine, mefex, military, pme, professional, warfighting