Rear Admiral

Rear Admiral Insignia
Command
Tactical
Engineering
Security
Medical
Science
Support
Intelligence
Aviation
Marine Equivilant

Rear admiral is a flag officer rank used by naval organizations, traditionally between the grades of commodore and Vice Admiral. This rank was used by the Federation Star Fleet (as well as its predecessor the Earth Star Fleet).

In the Earth organization, rear admirals were denoted by two rank insignia enclosed in a rectangular frame, worn on both sides of a uniform jacket.
These officers also had a series of rank stripes on their sleeve, a group of four stripes (three in a group, and one separate towards the cuff).

In the subsequent Federation fleets, rear admirals were again denoted by sleeve stripes, this time signified by a similar insignia, one solid band of braid, and an additional stripe separate.
Rear admiral's shoulder insignia, for epaulet uniforms, was a single eight pointed star.

By the Star Fleet Uniforms design of the 2280s, officers wore their insignia as a pin device attached to the shoulder on the jacket clasp.
The rear admiral pin was a small round field with four gold arrowheads arranged pointing towards the center, and was accompanied by an embroidered sleeve stripe.

24th century Star Fleet ranks changed the system slightly, deprecating the commodore grade, instead calling officers of that standing "rear admiral lower half."
The lower half rear admirals wore one triangular admiral braid on their shoulders, while upper half rear admirals wore one triangular braid and one rank pip beneath it.

Another redesign, in the 2360s, made rear admirals denoted by two gold rank pips surrounded by a square frame.

Trainees	Enlisted Personnel			Non-Commissioned Officers
Rct	CMR	CMA	CM	PO3	PO2	PO1	CPO	SCPO	MCPO	CMCPO	MCPOSF
Trainees	Commissioned Officers							Flag Officers
Cdt	Mid	Ens	Lt[JG]	Lt	LCdr	Cdr	Capt FCapt	Cmdr	RAdm	VAdm	Adm	FAdm