Italian Naval Ranks

Ranks With thanks to Andrea Di Matteo
•	Regia Marina Italiana				United States Navy equivalent		•
•	Line Officer Ranks		Naval Technical Corps [1]		United States Navy equivalent		•
—	G.Amm.	Grande Ammiraglio	—	—	—	(Grand Admiral)	—
G5	Amm.	Ammiraglio d'Armata	—	—	F.Adm.	Fleet Admiral	G5
G4	—	Ammiraglio di Squadra designato d'Armata	—	—	Adm.	Admiral	G4
G3	Amm.Sq.	Ammiraglio di Squadra	Gen.Insp.	Ispettore Generale	V.Adm.	Vice Admiral	G3
G2	Amm.Div.	Ammiraglio di Divisione	Ten.Gen.	Tenente Generale	R.Adm.	Rear Admiral [2]	G2
G1	C.A.	Contrammiraglio	Magg.Gen.	Maggior Generale	Com.	Commodore [2]	G1
O6	C.V.	Capitano di Vascello	C.V.	Capitano di Vascello	Capt.	Captain	O6
O5	C.F.	Capitano di Fregata	C.F.	Capitano di Fregata	Cdr.	Commander	O5
O4	C.C.	Capitano di Corvetta	C.C.	Capitano di Corvetta	Lt.Cdr.	Lieutenant Commander	O4
—	P.T.V.	Primo Tenente di Vascello	—	—	—	(Senior Lieutenant)	—
O3	T.V.	Tenente di Vascello	T.V.	Tenente di Vascello	Lt.	Lieutenant	O3
O2	S.V.	Sottotenente di Vascello	S.V.	Sottotenente di Vascello	Lt. (jg)	Lieutenant (junior grade)	O2
O1	G.M.	Guardiamarina	G.M.	Guardiamarina	Ensign	Ensign	O1
—	A.G.M.	Aspirante Guardiamarina	—	—	—	(Aspirant)	—
[1] The Corpi Tecnici della Marina (Naval Technical Corps), consisted of specialized officer branches in the Regia Marina, distinguished by unique rank insignia and uniform markings from line officers: Junior and senior officers held titles identical to their line-officer counterparts but were identified by the background color of their rank insignia — Corpo del Genio Navale (Naval Engineering Corps) — E.g. Generále Ispettoré del del Córpo Génio Navále — Corpo per le Armi Navali (Variously translated as Naval Weapons / Armament Corps / Ordnance Corps) — E.g. Ténete Generále del Córpo per le Ármi Naváli — Corpo Sanitario (Medical Corps) — E.g. Maggiór Generále del Córpo Sanitário Militáre Marítimo — Corpo di Commissariato (Commissariat Corps). — E.g. Generále Ispettoré del Córpo di Commisariáto Militáre Marítimo Responsible for logistics, supplies, and administration. — Corpo delle Capitanerie di Porto (Variously translated as Corps of the Port Captaincies / Port Authority Corps / Coast Guard Corps) (Responsible for coastal defense and port services.) — E.g. Ténete Generále del Córpo delle Capitaneríe di Pórto
[2] During World War II, the US Navy did not formally use the rank of Rear Admiral (Lower Half), abbreviated RDML or "Admiral LH." Instead, Rear Admirals were divided informally into "lower half" (junior, equivalent to G-1 pay, like a brigadier general) and "upper half" (senior, G-2 pay, like a major general), but both wore two-star insignia. On 08.04.1943 the USN revived the one-star rank of commodore for wartime needs, filling the gap between captain and rear admiral for officers leading ship or aircraft detachments.