Lieutenant Commander

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Common military ranks
Officers
Navies	Armies	Air forces
Admiral of the Fleet	Field Marshal	Marshal of the Air Force
Admiral	General	Air Marshal
Commodore	Brigadier	Air Commodore
Captain	Colonel	Group Captain
Commander	Lt. Colonel	Wing Commander
Lt. Commander	Major	Squadron Leader
Lieutenant	Captain	Flight Lieutenant
Sub-Lieutenant	Lieutenant	Flying Officer
Seamen, soldiers and airmen
Warrant Officer	Sergeant Major	Warrant Officer
Petty Officer	Sergeant	Sergeant
Leading Rate	Corporal	Corporal
Seaman	Private	Aircraftman

Lieutenant Commander (also hyphenated Lieutenant-Commander; pronounced Lef-tenant in the Royal Navy, Irish and Commonwealth navies)^[1] is a commissioned officer rank in many navies. The rank is superior to a Lieutenant and subordinate to a Commander. The corresponding rank in most armies (armed services) and air forces is Major, and in the Royal Air Force and other Commonwealth air forces is Squadron Leader.

A Lieutenant Commander is a senior department officer on a large ship or shore installation. He may also be commanding officer or executive officer (second-in-command) of a smaller ship or installation.

Contents 1 Origins 2 United Kingdom 2.1 Royal Navy 2.2 Royal Observer Corps 3 Other countries 4 Canada 5 United States 6 Russia 7 References

[edit] Origins

Lieutenants were commonly put in command of smaller vessels not warranting a Commander or Captain: such a Lieutenant was called a "Lieutenant Commanding" or "Lieutenant Commandant" in the United States Navy, and a "Lieutenant in Command" or "Lieutenant and Commander" in the Royal Navy. The USN settled on "Lieutenant Commander" in 1862, and made it a distinct rank; the RN followed suit in March 1914.

[edit] United Kingdom

[edit] Royal Navy

The insignia worn by a Royal Navy Lieutenant-Commander (Lt Cdr) is two medium gold braid stripes with one thin gold stripe running in between, placed upon a navy blue/black background. The top stripe has the ubiquitous loop used in all RN officer rank insignia. The RAF follows this pattern with its equivalent rank of Squadron Leader.

Having fewer officer ranks than the army, the RN previously split some of its ranks by seniority (time in rank) to provide equivalence: hence a Lieutenant with fewer than eight years' seniority wore two stripes, and ranked with an army Captain; a Lieutenant of eight years or more wore two stripes with a thinner one in between, and ranked with a Major. This distinction was abolished when the rank of Lieutenant-Commander was introduced.

[edit] Royal Observer Corps

Throughout much of its existence, the British Royal Observer Corps (ROC) maintained a rank of Observer Lieutenant Commander (Obs Lt Cdr). The ROC wore a Royal Air Force uniform and their rank insignia appeared similar to that of an RAF Squadron Leader except that the stripes were shown entirely in black. Prior to the renaming, the rank had been known as Observer Lieutenant (First Class).

v • d • e Commissioned Officer ranks of the British Armed Forces
NATO Rank code	Student Officer	OF(D)	OF-1		OF-2	OF-3	OF-4	OF-5	OF-6	OF-7	OF-8	OF-9	OF-10
Royal Navy	OC	Mid	SLt		Lt	Lt Cdr	Cdr	Capt	Cdre	RAdm	VAdm	Adm	Adm of the Fleet
Royal Marines			2Lt	Lt	Capt	Maj	Lt Col	Col	Brig	Maj-Gen	Lt Gen	Gen
Army	O Cdt		2Lt	Lt	Capt	Maj	Lt Col	Col	Brig	Maj-Gen	Lt Gen	Gen	FM
Royal Air Force	OC		APO / Plt Off	Fg Off	Flt Lt	Sqn Ldr	Wg Cdr	Gp Capt	Air Cdre	AVM	Air Mshl	Air Chf Mshl	MRAF

[edit] Other countries

Insignia similar to that of the Royal Navy's is worn by Lieutenant-Commanders in other Commonwealth navies, such as the Royal Australian Navy (which uses the abbreviation "LCDR"), the Royal New Zealand Navy, the Irish Naval Service, and the Canadian Forces Maritime Command (formerly known as the Royal Canadian Navy, and which uses the abbreviation "LCdr"). Unlike the United States Navy, personnel in the Royal Navy and other Commonwealth navies addressing a Lieutenant-Commander do not abbreviate the rank to "Commander". The United States Navy always addresses officers using the higher grade of the rank; as an example, a LTJG is not referred to as Lieutenant Junior Grade, but simply as Lieutenant, and a Lieutenant Commander is referred to as a Commander. If either a Commander or Lieutenant Commander have screened for and are in command of a naval vessel or installation, they are casually referred to as the skipper.

A corresponding rank in some other navies^[which?] is Corvette Captain.

[edit] Canada

[edit] United States

v • d • e United States commissioned officer and officer candidate ranks
	Officer candidate	O-1	O-2	O-3	O-4	O-5	O-6	O-7	O-8	O-9	O-10	Special	Special
Approximate insignia:	(no universal insignia)												(no authorized insignia)
Air Force:	CDT / OT	2d Lt	1st Lt	Capt	Maj	Lt Col	Col	Brig Gen	Maj Gen	Lt Gen	Gen	GOAF[1][4]	[2]
Army:	CDT / OC	2LT	1LT	CPT	MAJ	LTC	COL	BG	MG	LTG	GEN	GA[1][4]	General of the Armies[1][4]
Marine Corps:	Midn / Cand	2ndLt	1stLt	Capt	Maj	LtCol	Col	BGen	MajGen	LtGen	Gen	[2]	[2]
Navy:	MIDN / OC	ENS	LTJG	LT	LCDR	CDR	CAPT	CDRE[5] / RDML	RADM	VADM	ADM	FADM[1][4]	Admiral of the Navy[1][4]
Coast Guard:	CDT	ENS	LTJG	LT	LCDR	CDR	CAPT	CDRE[5] / RDML	RADM	VADM	ADM	[2]	[2]
Public Health Service:	[2]	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	[2]	[2]
National Oceanic and Atmospheric Administration:	[2]	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM[1][4]	[3]	[2]	[2]
Grade inactive [1] Grade never created [2] Grade is authorized for use by U.S. Code but has not been created [3] Grade requires Congressional approval for re-activation [4] Rank inactive and abolished [5]

v • d • e United States warrant officer ranks
	W-1	W-2	W-3	W-4	W-5
Approximate insignia:	(no universal insignia)	(no universal insignia)	(no universal insignia)	(no universal insignia)	(no universal insignia)
Air Force:	WO-1[1]	CWO-2[1]	CWO-3[1]	CWO-4[1]	CWO-5[1]
Army:	WO1	CW2	CW3	CW4	CW5
Marine Corps:	WO-1	CWO-2	CWO-3	CWO-4	CWO-5
Navy:	WO-1[1]	CWO-2	CWO-3	CWO-4	CWO-5
Coast Guard:	[3]	CWO-2	CWO-3	CWO-4	[3]
Public Health Service:	[3]	[3]	[3]	[3]	[2]
National Oceanic and Atmospheric Administration:	[2]	[2]	[2]	[2]	[2]
Grade inactive [1] Grade never created [2] Grade is authorized for use by U.S. Code but has not been created [3]

[edit] Russia

The corresponding rank to Lieutenant Commander is Captain 3rd Rank.

[edit] References