Petty Officer Second Class

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[1] Petty Officer Second Class Affiliation UNSC Navy Higher Rank Petty Officer First Class Lower Rank Petty Officer Third Class Known Petty Officer Second Classs Numerous SPARTAN-IIs
	[Source]

Petty Officer Second Class is the fifth enlisted rank of the UNSC Navy and is a non-commissioned officer. It is equal in rank to Sergeant in the UNSC Marine Corps. This rank is given to all SPARTAN-IIs upon graduation.^[2] This is most likely due to combat situations in which a senior Marine NCO has been neutralized, allowing a SPARTAN-II to take command of a squad.

In informal settings, Petty Officers Second Class are typically called "Petty Officer".

[edit] Known Personnel

Cassandra Shiela Polaski Li-008 Joshua-029 Vinh-030 Samuel-034 Isaac-039 William-043

Anton-044 Linda-058 Malcolm-059 Kelly-087 Grace-093 Nicole-458 Adam-B004 Lucy-B091

Min-B174 Tom-B292 Holly-G003 Spartan-James Spartan-Jane Spartan-Robert Spartan-Shane Spartan-Sheila

[edit] Sources

1. ↑ This is the insignia for a UNSC Petty Officer Second Class. However, in Halo 3 the insignia for Master Chief Petty Officer is shown to be similar to that used by the 20th/21st Century US Navy (with the standard Eagle changed for that of the UNSC Phoenix). It is inferred that this applies to all UNSC Navy Enlisted rank insignia.
2. ↑ Halo: The Fall of Reach, page 99.

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