United States Marine Corps Forces Special Operations Command (MARSOC)

MARSOC is command that covers several United States Marine Corps special operations elements (excluding those remaining Force Recon elements dedicated to USMC ops). MARSOC itself is under the umbrella of SOCOM (Special Operations Command).

MARSOC consists of:

Marine Raider Regiment (MRR)

The Marine Raiders are MARSOC's combat units. Marine Raiders are trained in direct action, special reconnaissance, foreign internal defense and unconventional warfare. MRB Marines that have passed throught grueling training pipeline are known as Critical Skills Operators (CSO). Officers are known as Special Operations Officers (SOO).

The Marine Raider Regiment is made up of:

1 x Headquarters Company
3 x Marine Raider Battalions (MRB)
- 1st MRB
- 2d MRB
- 3d MRB

Each MRB contains 4 Marine Special Operations Companies (MSOCs). Each MSOC contains an HQ Element and 4 Marine Special Operations Teams (MSOTs). A 14-man MSOT consists of:

HQ Element
Team Leader (Captain)
Team Chief (Master Sergeant)
Operations Sergeant (Gunnery Sergeant)
Assistant Operations Sergeant (Staff Sergeant)
Tactical Element
Element Leader (Staff Sergeant)
Assistant Element Leader / Element Member
Element Member (Sergeant)
Element Member
Navy Special Amphibious Reconnaissance Corpsman (SARC)
Tactical Element
Element Leader (Staff Sergeant)
Assistant Element Leader / Element Member
Element Member (Sergeant)
Element Member
Navy Special Amphibious Reconnaissance Corpsman (SARC)

The 1st and 2nd MRBs were initially formed from the corresponding existing 1st and 2nd Force Reconnaissance companies of the Marine Corps. The 3rd MRB was eventually formed from the Marines Special Operations Advisor Group, a previous MARSOC unit, which specialized in foreign internal defence and unconventional warfare operations.

Marine Raider Support Group (MRSG)

MARSOC communications, intelligence, logistics and other support elements
more info: Marine Raider Support Group

Marine Special Operations School (MSOS)

Training and selection for MARSOC.

more info : Critical Skills Operator selection & training

MARSOC organizational chart

Marine Raiders

Note: The Marine Raider Regiment was previously known as the Marine Special Operations Regiment (MSOR). Marine Raider Battalions were known as Marine Special Operations Battalions (MSOBs). The MSOR and its subordinate units were renamed with the 'Marine Raider' moniker in August 2014, in recognition of the World War 2 unit. The Marine Special Operations Support Group (MSOG) and its subordinate units were also redesignated with the Marine Raider label.