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.
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.
2nd Battalion, 11th Marines (2/11) is an artillery battalion comprising four firing batteries and a Headquarters Battery. The battalion is stationed at Marine Corps Base Camp Pendleton, California. Its primary weapon system is the M777 lightweight howitzer. The battalion was the first in the Marine Corps to fully transition from the M198 Howitzer. They fall under the command of the 11th Marine Regiment and the 1st Marine Division.
The 7th Engineer Support Battalion is an engineer support unit of the United States Marine Corps and is headquartered at Marine Corps Base Camp Pendleton, California. The unit falls under the command of 1st Marine Logistics Group and the I Marine Expeditionary Force.
1st Medical Battalion is a unit of the United States Marine Corps operated by the United States Navy that provides expeditionary Health Service Support to Marine Corps forces forward deployed to operations or humanitarian missions. The unit is based out of Marine Corps Base Camp Pendleton and falls under the command of 1st Marine Logistics Group.
The 31st Marine Expeditionary Unit is one of seven Marine Expeditionary Units in existence in the United States Marine Corps. The Marine Expeditionary Unit is a Marine Air Ground Task Force with a strength of about 2,200 Marines and sailors. The 31st MEU consists of a company-sized command element, a battalion landing team (BLT),, a medium tiltrotor squadron (reinforced),, and a combat logistics battalion. The 31st MEU is based at Camp Hansen, Marine Corps Base Camp Smedley D. Butler, Okinawa, Japan. The 31st MEU is the only permanently forward-deployed MEU, and provides a flexible and lethal force ready to perform a wide range of military, humanitarian, and diplomatic operations as the premier crisis response force in the Indo-Pacific region.
Combat Logistics Battalion 15 (CLB-15) is a military logistics battalion in the United States Marine Corps based out of Camp Pendleton, California. It consists of approximately 275 Marines and Sailors. It is part of Combat Logistics Regiment 17 within the 1st Marine Logistics Group, I Marine Expeditionary Force. When assigned under the operational control of the 15th Marine Expeditionary Unit, it becomes the Logistics Combat Element (LCE) providing expeditionary combat logistics support to all supported elements of the Marine Expeditionary Unit. CLB-15 has two sister MEU CLBs also based out of Camp Pendleton: CLB-11 and CLB-13.
The United States Marine Corps is organized within the Department of the Navy, which is led by the Secretary of the Navy (SECNAV). The most senior Marine commissioned officer is the Commandant of the Marine Corps, responsible for organizing, recruiting, training, and equipping the Marine Corps so that it is ready for operation under the command of the unified combatant commanders. The Marine Corps is organized into four principal subdivisions: Headquarters Marine Corps, the Operating Forces, the Supporting Establishment, and the Marine Forces Reserve.
In the United States Marine Corps, the ground combat element (GCE) is the land force of a Marine Air-Ground Task Force (MAGTF). It provides power projection and force for the MAGTF.
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 Battalion 8 (CLB-8) is a logistics battalion of the United States Marine Corps. It is part of Combat Logistics Regiment 2 and the 2nd Marine Logistics Group. The unit is based out of the Marine Corps Base Camp Lejeune, North Carolina.
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.
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.
Combat Logistics Battalion 31 (CLB-31) is a logistics battalion of the United States Marine Corps. CLB-31 is the Logistics Combat Element (LCE) of the 31st Marine Expeditionary Unit, the only continuously forward-deployed MEU in the Marine Corps.
2d Transportation Support Battalion is a logistics unit of the United States Marine Corps that is based at Marine Corps Base Camp Lejeune, North Carolina. The battalion falls under the command of Combat Logistics Regiment 2 and the 2nd Marine Logistics Group. The battalion was reactivated October 1, 2014.
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.
2d Landing Support Battalion(2d LSB) was a logistics battalion in the United States Marine Corps that supports distributed maritime operations and expeditionary advanced base operations. The unit was based out of Marine Corps Base Camp Lejeune, North Carolina and fell under the command of the 2nd Marine Logistics Group and the II Marine Expeditionary Force.
3d Landing Support Battalion(3d LSB) is a logistics battalion in the United States Marine Corps that supports distributed maritime operations and expeditionary advanced base operations. The unit is based out of Camp Foster, Okinawa, Japan and falls under the command of the 3rd Marine Logistics Group and the III Marine Expeditionary Force.
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