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Crewman Affiliation UNSC Navy Higher Rank Petty Officer Third Class Lower Rank Crewman Apprentice Known Crewmans Abiad Singh Wang
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Crewman is the third enlisted rank of the UNSC Navy, equal in rank to Lance Corporal in the UNSC Marine Corps, Airman First Class in the UNSC Air Force, and Private First Class in the UNSC Army. It is the highest non-NCO enlisted rank in the Navy, directly below Petty Officer Third Class and directly above Crewman Apprentice.

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