Starfleet Marine Corps

The Starfleet Marine Corps (abbreviated SFMC) was a descendant of naval infantry, based upon marines and army infantry of many Federation member planets.
As with the Starfleet Starfighter Corps, the SFMC was an autonomous branch of Starfleet, although there was some authority at the unit level. The commanding officer of the SFMC held the rank of Force Marshall, which was equivalent to Fleet Admiral.
The primary role of the Marines within the fleet was to maintain a well armed defensive force for rapid deployment anywhere within the Federation and outlying space. Marine detachments were stationed aboard starships and bases where they assisted the crew in battles, boarding enemy ships, and conducting planetary actions, as well as assisting in the defense of Federation installations. They also served as a landing force; securing an area for transporter or shuttle landing. Unlike security, Marines do not walk a patrol, investigate crime or administer the brig and unlike tactical, Marine did not operate the ship's weaponry. As a result of their mixed land and space role, Marine forces were mainly specialized in amphibious (figuratively 'of two worlds') assaults using infantry, armor, artillery, air/spacecraft, and watercraft. They train for many combat scenarios, including hostage recovery, rescue of Federation citizens caught in dangerous situations, as well as full ground based combat.
== Organization ==
The SFMC was split into ten numbered expeditionary forces. Within each expeditionary force were five corps, plus a brigade of each artillery and marine rangers. Every corps had three divisions, each made up of three brigades and an armored regiment. A brigade had five regiments and a battalion of marine scouts. A regiment was two battalions of five companies each, plus an extra platoon of scouts. Every company has a pair of platoons of five squads, each made of three fire teams of four marines.
Unit 	Composition 	Personnel	Typical command rank
Starfleet Marine Corps 	Ten (10) expeditionary forces 	6,954,568	Force General
Expeditionary Force 	Five (5) Corps, One (1) Artillery Brigade, One (1) Headquarters Regiment 	694,704 	General
Corps 	Three (3) Divisions, One (1) Headquarters Regiment 	135,483 	Lieutenant General
Division 	Three (3) Brigades, One (1) Armored Regiment, One (1) Headquarters Regiment	43,834 	Major General
Brigade 	Five (5) Regiments, One (1) Scout Battalion, One (1) Headquarters Battalion	12,907 	Brigadier General
Regiment 	Two (2) Battalions, One (1) Scout Platoon, One (1) Headquarters company 	2,005 	Colonel
Battalion 	Five (5) Companies, One (1) Headquarters Platoon 	924 	Major
Comapny 	Two (2) Platoons 	157 	Senior lieutenant
Platoon 	Five (5) Squads 	67 	Second lieutenant
Squad 	Three (3) Infantry Fire Teams 	12 	Sergeant
Fire Team 	Four (4) Marine Troopers 	4 	Corporal
Artillery 	 	 	
Artillery Brigade 	Five (5) Artillery Regiments 	10,509 	Brigadier General
Artillery Regiment 	Three (3) Artillery Battalions 	1,928 	Colonel
Artillery Battalion 	Eight (8) Batteries 	626 	Lieutenant Colonel
Battery 	Three (3) Sections 	77 	Senior Lieutenant
Section 	Two (2) Artillery Pieces w/ Gun Crews 	24 	Second Lieutenant
Gun crew 	One (1) Artillery piece 	11 	Staff Sergeant
Marine Armored Division	Marine Armored Division 	 	
Armored Regiment 	Three (3) Armored Squadrons 	2,487 	Colonel
Armored Squadron 	Four (4) Armored Troops 	803 	Lieutenant Colonel
Armored Troop 	Six (6) Armored Platoons 	167 	Senior Lieutenant
Armored Platoon 	Two (2) Tanks w/ Crews 	22 	Warrant Officer
Tank Crew 	Four (4) Crews 	4 	Sergeant First Class
Marines Scouts 	 	 	
Scout Battalion 	Three (3) Scout Squadrons 	1,323 	Lieutenant Colonel
Scout Squadron 	Four (4) Scout Platoons 	435 	Major
Scout Platoon 	Four (4) Scout Squads 	107 	First Lieutenant
Scout Squad 	Three (3) Scout Teams 	25 	Staff Sergeant
Scout Team 	Eight (8) Speeder Bikes w/ Scouts 	8 	Corporal
Marine Rangers 	 	 	
Ranger Brigade 	Three (3) Ranger Regiments 	2,619 	Major General
Ranger Regiment 	Eight (8) Ranger Squadrons 	769 	Force Colonel
Ranger Squadron 	Four (4) Ranger Platoons 	93 	Major
Ranger Platoon 	Five (5) Ranger Teams 	22 	Senior Lieutenant
Ranger Team 	Four (4) Marine Rangers 	4 	Sergeant
== Expeditionary forces ==
Force 	Commanding officer 	Sub-units 	Sub-units 	Sub-units
1st Expeditionary Force	General _____ _____	1st Marine Corps	2nd Marine Corps	3rd Marine Corps
2nd Expeditionary Force	 	4th Marine Corps	5th Marine Corps	6th Marine Corps
 	 	7th Marine Corps	8th Marine Corps	9th Marine Corps