Fleet Admiral Affiliation UNSC Navy Higher Rank None Lower Rank Admiral Command Planetary Defenses (Home Fleet) [1] Known Fleet Admirals Harper Lord Terrence Hood H.T. Ward
	[Source]

Fleet Admiral is the highest commissioned officer rank of the UNSC Navy, although promotion to this rank is restricted to times of war. It is equal in rank to General of the Air Force in the UNSC Air Force, and General of the Army in the UNSC Army. They are generally well experienced and battle-hardened naval commanders.

As there is no equivalent in the UNSC Marine Corps, Fleet Admirals outrank all United Nations Space Command military organizations' Marine Officers.

SourcesEdit

1. ↑ Fleet Admiral Terrence Hood is in charge of all Earth's defenses and Fleet Admiral Harper is in command of one of the fleets making up those defenses.

UNSC Defense Force commissioned officer ranks
	O-1	O-2	O-3	O-4	O-5	O-6	O-7	O-8	O-9	O-10	Special
Approximate insignia:
Air Force:	2nd Lt	1st Lt	Capt	Maj	Lt Col	Col	Brig Gen	Maj Gen	Lt Gen	Gen	GOAF
Army:	2LT	1LT	CPT	MAJ	LTC	COL	BG	MG	LTG	GEN	GA
Marine Corps:	2ndLt	1stLt	CPT	Maj	LtCol	Col	BGen	MajGen	LtGen	Gen
Navy:	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	FADM