Sergeant Major

The rank of Sergeant Major is frequently the highest enlisted rank a soldier can reach in their time in the military. Usually the Sergeant Major is the highest ranking non-commissioned officer in a battalion, and is responsible for the discipline and conduct of all enlisted personnel in the battalion.

SLDF

The SLDF didn't use the rank of Sergeant Major, instead calling them Master Sergeants. To reach this rank a SLDF soldier had to serve for at least four years.

Lyran Commonwealth and Lyran Alliance

In the LAAF, a Sergeant Major usually supports a company commander. Occasionally they lead 'Mech lances. Most LAAF boot camp instructors hold this rank.

LAAF Military Rank Insignia

Rank	Insignia
Sergeant Major

Draconis Combine Mustered Soldiery

In the DCMS and DCA, a sergeant major is known by the Japanese title Sho-ko. Their rank insignia is a royal blue katakana 2 on a colored background appropriate to their branch of service. Frequently they are the second in command of a lance or platoon.

DCMS Officer Ranks by branch of service

DCMS Ranks						DCA Ranks
Rank	MechWarrior	AeroSpace Fighter	Infantry	Armor	Artillery	Rank	Naval Crew Draconis Combine Admiralty	Technical Service
Sho-ko (Sergeant Major)						Sho-ko (Sergeant Major)

Armed Forces of the Federated Suns

In the AFFS, the Sergeant Major is the highest rank possible for a soldier to reach without attending a military academy. Typically each battalion of a regiment has a Sergeant Major who acts as the liaison between the officers and enlisted men.

Capellan Confederation Armed Forces

In the CCAF, these soldiers are known as yi-si-ben-bing thanks to the reforms enacted by Sun-Tzu Liao as part of his Xin Sheng movement. Though translated as Master Sergeant, the duties and obligations of this rank make it more like the SLDF rank rather than the DCMS Master Sergeant rank.

CCAF Military Ranks

CCAF Rank	Warrior House rank	Insignia
Yi-si-ben-bing (Master Sergeant)	N/A

Free Worlds League

In the FWLM, each regiment has a single Sergeant Major. This person is responsible for the conduct and discipline of every enlisted solider and NCO in the regiment. As it is the highest enlisted rank in the FWLM, soldiers who hold this rank are accorded a great deal of respect by their fellows. This rank is known as Master Chief Petty Officer in the FWLM Navy, with one MCPO per WarShip, JumpShip, and DropShip.

Prior to the Prior to the Andurien Secession in 3030 and the passage of the Military Reorganization Act of 3046, the Duchy of Andurien's Defenders of Andurien regiments also used the rank of Banner and Master Banner in place of Sergeant Major.

To indicate their rank, FWLM Sergeant Majors and Master Chief Petty Officers use three gold chevrons on a purple background with a black bar and circular tab above it.

FWLM Military Rank Insignia

Rank	Insignia
Sergeant Major

ComStar/Word of Blake

This rank isn't used in the ComGuards or Word of Blake Militia. Instead a senior Acolyte or an Adept would be assigned these duties.

Free Rasalhague Republic

In the KungsArmé this rank is known by its Swedish name, Fanjunkare.