Logistics is the science of planning and carrying out the movement and maintenance of forces. In the Marine Corps, this includes the design, development, acquisition, storage, movement, distribution, maintenance, evacuation, and disposition of material.Logistics also includes the movement, evacuation, and hospitalization of personnel.
Additionally included is the acquisition or construction, maintenance, operation, and disposition of facilities, and the acquisition or furnishings of services.
Logistics functions are performed by US Marines in a wide variety of MOSs in various occupational fields. Enlisted specialties within occupational field 04 provide advice, guidance, logistics/combat service support, embarkation, landing support, and air delivery.