Corporal

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[1] Corporal Affiliation UNSC Army and Marine Corps Higher Rank Sergeant Lower Rank Specialist (Army) and Lance Corporal (Marines) Command Usually a fireteam or 4 or 5 soldiers or Marines Known Corporals C. Errera Harland Locklear Lovik Benjamín M. Nùñez Perez Wilkins Kale West Jim Higgins Unnamed Female Corporal Taylor Miles
	[Source]

Corporal is the fourth enlisted rank in the UNSC Marine Corps and the UNSC Army, and is the lowest rank of Non-Commissioned Officer (NCO). It is equal in rank to Petty Officer Third Class in the UNSC Navy.

Promotion to Corporal traditionally confers a large jump in authority and responsibility compared to promotion from Private through Lance Corporal.

While both the UNSC Army and the UNSC Marine Corps share the rank of Corporal, the UNSC Marine Corps promotes Lance Corporals directly to Corporal. Most of the time in the Army, Privates First Class (which are E-3) are promoted to Specialist, and then directly to Sergeant. In some cases, however, they may get promoted to Corporal instead of Specialist.

[edit] Sources

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