Combat service support is a topic that is, broadly speaking, a subset of military logistics. However, combat service support is often more limited in depth, as the related groups primarily address factors supporting readiness for combat operations. The United States Department of Defense organizes various agencies providing services such as medical assistance, for example, akin to other nations' militaries.
The 3rd Marine Logistics Group is the Logistics Combat Element (LCE) for III Marine Expeditionary Force currently headquartered on Camp Kinser, Marine Corps Base Smedley D. Butler, Okinawa, Japan. 3rd MLG provides combat service support (CSS) to III MEF units above the organic capability. CSS is the essential capabilities, functions, activities, and tasks necessary to sustain all elements of operating forces in theater at all levels of war. Combat service support includes, but is not limited, to supply, maintenance, transportation, general engineering, health services, and other services required by aviation and ground combat forces to permit those units to accomplish their missions.
The 1st Marine Logistics Group is a logistics unit of the United States Marine Corps and is headquartered at Marine Corps Base Camp Pendleton, California, with several subordinate elements located at Marine Corps Air Station Yuma and Marine Corps Air Ground Combat Center Twentynine Palms. It is the logistics combat element of the I Marine Expeditionary Force.
The 4th Marine Logistics Group is a reserve logistics unit of the United States Marine Corps. The group is headquartered at New Orleans, Louisiana while its subordinate units are spread across the United States.
The 2nd Marine Logistics Group is a logistics unit of the United States Marine Corps and is headquartered at Marine Corps Base Camp Lejeune, North Carolina. 2nd MLG was formerly known as 2nd Force Service Support Group (FSSG), reorganized with its sister FSSGs into Marine Logistics Groups in 2005. The 2nd MLG is composed of approximately 8,000 marines and sailors.
In the United States Marine Corps, a Marine Air–Ground Task Force is the principal organization for all missions across the range of military operations. MAGTFs are a balanced air–ground, combined arms task organization of Marine Corps forces under a single commander that is structured to accomplish a specific mission. The MAGTF was formalized by the publishing of Marine Corps Order 3120.3 in December 1963, "The Marine Corps in the National Defense, MCDP 1-0". It stated:
A Marine air–ground task force with separate air ground headquarters is normally formed for combat operations and training exercises in which substantial combat forces of both Marine aviation and Marine ground units are included in the task organization of participating Marine forces.
Combat Logistics Battalion 7(CLB 7) is a logistics battalion of the United States Marine Corps. The unit is based out of the Marine Corps Air Ground Combat Center Twentynine Palms, California and falls under the command of the 1st Marine Logistics Group and I Marine Expeditionary Force.
Combat Logistics Regiment 3 (CLR-3) is a direct support (DS) logistics unit of the United States Marine Corps and is headquartered at Camp Foster, Okinawa, Japan. The unit falls under the 3rd Marine Logistics Group and the III Marine Expeditionary Force.
Combat Logistics Regiment 37, 3rd MLG is a logistics regiment of the United States Marine Corps. It is part of the 3rd Marine Logistics Group and III Marine Expeditionary Force. The unit is based out of the Marine Corps Base Camp Kinser, Okinawa, Japan.
Combat Logistics Regiment 15 (CLR-15) was a logistics regiment of the United States Marine Corps. When active, it fell under the command of the 1st Marine Logistics Group and I Marine Expeditionary Force. The unit was based out of Marine Corps Base Camp Pendleton, California, United States.
Combat Logistics Regiment 17 is a logistics regiment of the United States Marine Corps. It is subordinate to the command of the 1st Marine Logistics Group, I Marine Expeditionary Force. The unit is based out of Marine Corps Base Camp Pendleton, California.
1st Marine Expeditionary Brigade is a unit in the I Marine Expeditionary Force and is the "middleweight" global crisis response force.
Combat Logistics Regiment 2 is a logistics regiment of the United States Marine Corps. The unit is based at Marine Corps Base Camp Lejeune, North Carolina and falls under the command of the 2nd Marine Logistics Group and the II Marine Expeditionary Force.
Combat Logistics Regiment 25 was a logistics regiment of the United States Marine Corps. When active, the unit was based at Marine Corps Base Camp Lejeune, North Carolina and fell under the command of the 2nd Marine Logistics Group and the II Marine Expeditionary Force.
Combat Logistics Regiment 27 is a logistics regiment based at Marine Corps Base Camp Lejeune, North Carolina and falls under the command of the 2nd Marine Logistics Group and the II Marine Expeditionary Force, United States Marine Corps.
The 1st Supply Battalion is a battalion of the United States Marine Corps that specializes in distributing and warehousing military goods and equipment. It is based out of Marine Corps Base Camp Pendleton, California and falls under the command of the 1st Marine Logistics Group.
The 1st Maintenance Battalion is a battalion of the United States Marine Corps that provides intermediate-level maintenance for the I Marine Expeditionary Force's tactical ordnance, engineer, motor transport, communications electronics and general support ground equipment. The Marines and Sailors of 1st Maintenance Battalion are regularly assigned and deployed around the world with command elements that deliver tactical logistics support to I MEF units. The command is based out of Camp Las Pulgas, Marine Corps Base Camp Pendleton, California and is organized under the command of the 1st Marine Logistics Group.
The 2nd Maintenance Battalion is a battalion of the United States Marine Corps that provides field-level intermediate maintenance for the II Marine Expeditionary Force's tactical ordnance, engineer, motor transport, communications electronics and general support ground equipment. They are based out of Marine Corps Base Camp Lejeune, North Carolina and fall under the command of 2nd Marine Logistics Group.
Combat Logistics Regiment 4 (CLR-4) is a regiment of the United States Marine Corps Reserve. It was activated on September 8, 2013 in Kansas City, Missouri.
1st Transportation Battalion (TB) was a General Support (GS) logistics unit of the United States Marine Corps that was headquartered at Marine Corps Base Camp Pendleton, California. The unit last fell under the command of Combat Logistics Regiment 1 and the 1st Marine Logistics Group until deactivation on 12 January 2024.
