This training and readiness (T&R) manual, establishes training standards, regulations, and policies regarding the T&R of a Marine Air-Ground Task Force (MAGTF). The MAGTF is the Marine Corps' principal organization for all missions across the range of military operations. The MAGTF provides a combatant commander or other operational commander with a versatile expeditionary force for responding to a broad range of crisis and conflict situations. MAGTFs are balanced, combined arms forces with organic command, ground, aviation, and sustainment elements. There are five types of MAGTFs; Marine Expeditionary Brigade (MEB), Marine Expeditionary Force (MEF), MEF (forward), Marine Expeditionary Unit (MEU), and Special Purpose MAGTFs.