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[1] Sergeant Affiliation UNSC Marine Corps and UNSC Army Higher Rank Staff Sergeant Lower Rank Corporal Command A squad of about 12 (Marines) A team of about four (Army) Known Sergeants John Forge Joseph M. Poteet Alasdair R. Schicker Corly Parker Laura "Smokes" Tanner Howser Twyker
	[Source]

Sergeant is the fifth enlisted rank (E-5) of the UNSC Marine Corps and the UNSC Army, and is a non-commissioned officer. It is equal to the rank of Petty Officer Second Class in the UNSC Navy and Staff Sergeant in the Air Force. Sergeants in the Army lead may lead teams of around 4 soldiers, while Marine Sgts. typically lead squads of about 12 Marines.

While Sergeant is a rank of its own, the title "Sergeant" is often used to refer to any of the enlisted ranks of the UNSC Marine Corps or Army which carry the title Sergeant:

• UNSC Marine Corps

1. Sergeant Major of the Marine Corps
2. Sergeant Major
3. Master Gunnery Sergeant
4. First Sergeant
5. Master Sergeant
6. Gunnery Sergeant
7. Staff Sergeant
8. Sergeant

• UNSC Army

1. Sergeant Major of the Army
2. Command Sergeant Major
3. Sergeant Major
4. First Sergeant
5. Master Sergeant
6. Sergeant First Class
7. Staff Sergeant
8. Sergeant

SourcesEdit

1. ↑ Halo 3: ODST Screenshot of the Rookie - Upper left chest plate has clear sign of one chevron and two crossed rifles of a United States Marine Corps Lance Corporal. It is assumed that the UNSC uses the same insignia for its Marines.

UNSC Defense Force enlisted ranks
	E-1	E-2	E-3	E-4	E-5	E-6	E-7	E-8	E-9	Senior Enlisted Advisor
Air Force:	AB	Amn	A1C	SrA	SSgt	TSgt	MSgt	SMSgt	CMSgt - CCM	CMSAF
Army:	PV1	PV2	PFC	SPC - CPL	SGT	SSG	SFC	MSG - 1SG	SGM - CSM	SMA
Marine Corps:	Pvt	PFC	LCpl	Cpl	Sgt	SSgt	GySgt	MSgt - 1stSgt	MGySgt - SgtMaj	SgtMajMC
Navy:	CR	CA	CN	PO3	PO2	PO1	CPO	SCPO	MCPO - CMDCM - FORCM - FLTCM	MCPON