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A US Navy lieutenant commander's sleeve/shoulder insignia

Lieutenant commander (also hyphenated lieutenant-commander and abbreviated LCdr,^[1]LCdr.^[2] or LCDR^[3]^[4]) 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.

The NATO rank code is mostly OF-3.^[5]

A lieutenant commander is a senior department officer or the executive officer (second-in-command) on many warships and smaller shore installation, or the commanding officer of a smaller ship/installation.^[6] They are also senior department officers in naval aviation squadrons.

Etymology

Most Commonwealth and other navies address lieutenant commanders by their full rank or the positions they occupy ("captain" if in command of a vessel). The United States Navy, however, addresses officers by their full rank or the higher grade of the rank. For example, oral communications in formal and informal situations, a lieutenant (junior grade) is abbreviated as "lieutenant," and a lieutenant commander is abbreviated as "commander." ^[7]

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," "lieutenant and commander," or "senior lieutenant" 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.^[8]

United Kingdom

Royal Navy

The insignia worn by a Royal Navy lieutenant commander 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, except for the rank of Midshipman. 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.

Royal Observer Corps

Throughout much of its existence, the British Royal Observer Corps (ROC) maintained a rank of observer lieutenant commander. 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).

Canada

Royal Canadian Navy

In the Royal Canadian Navy, the rank is the naval rank equal to major in the army or air force and is the first senior officer rank. Lieutenant commanders are senior to lieutenants (N) and to army and air force captains, and are junior to commanders and lieutenant colonels.^[5]

United States

There are two insignia used by USN and USCG lieutenant commanders. On service khakis and all working uniforms, lieutenant commanders wear a gold oak leaf collar device, similar to the ones worn by majors in the USAF and Army, and identical to that worn by majors in the Marine Corps. In all dress uniforms, they wear sleeve braid or shoulder boards bearing a single gold quarter-inch stripe between two gold half-inch strips (nominal size). Above or inboard of the stripes, they wear their speciality insignia (i.e., a star for officers of the line, single oak leaf for medical with silver acord for Medical Corps, crossed oak leaves for Civil Engineer Corps, United States shield for Coast Guard, etc.).^[9]

Pakistan

Pakistani lieutenant commander's insignia.

This rank is also used in the Pakistan Navy.^[10]

Ireland

Irish Navy Insignia

The rank of lieutenant commander is also used in the Irish Naval Service, having a similar implication to the RN rank. The majority of vessel commanders in the Irish Naval Service hold the rank of lieutenant commander, with a commander being a senior, shore-based position.^{[citation needed]}

Other countries

A French capitaine de corvette maneuvering.

The rank corresponding to lieutenant commander in the German Navy, Italian Navy, Argentine Navy, Brazilian Navy, French Navy, Spanish Navy and most other French and Spanish-speaking countries is corvette captain. The corresponding rank in the Estonian and Portuguese navies is captain lieutenant. In the Russian Navy lieutenant commander is "captain of the third rank" (капитан 3-го ранга), and in the Polish Navy it is komandor podporucznik.^[5] In the Finnish Navy the equivalent rank is komentajakapteeni, "commander captain"; the rank insignia of komentajakapteeni is three stripes of equal width. The insignia of kapteeniluutnantti, the rank immediately below the former, is one thin stripe between two wider ones, which could cause some confusion among the naval personnel of other nations. In Swedish the rank is called Örlogskapten, in Danish Orlogskaptajn and in Norwegian Orlogskaptein.

References

^ "Triservice Officers Pay and Grade" (PDF). UK Government. Archived (PDF) from the original on 2016-03-04. Retrieved 2013-04-25.

^ "A Dane giving the orders". Admiral Danish Fleet. Archived from the original on 2013-10-22. Retrieved 2013-04-25.

^ "US Navy Ranks". United States Navy. Archived from the original on 2013-05-02. Retrieved 2013-04-25.

^ "Uniform Ranks". Royal Australian Navy. Archived from the original on 2015-01-24. Retrieved 2013-04-25.

^ ^a^b^c "NATO Standard Agreement (STANAG) 2116: NATO Codes for Grades of Military Personnel". NATO standardization agreement (5 ed.). NATO Standardization Agency (published 25 February 2010). 13 March 1996. Archived from the original on 1 September 2011. Retrieved 13 July 2017.

^ "United States Navy - O-4 Lieutenant Commander". FederalPay.org. Archived from the original on 2018-05-08. Retrieved 2017-05-22.

^ "MILPERSMAN 5000-010" (PDF). U.S. Navy. 22 Aug 2002. Archived (PDF) from the original on 6 October 2016. Retrieved 28 June 2016.

^ "Lieutenant Commander mokong Ibana". Archived from the original on 27 May 2009. Retrieved 6 October 2009.

^ "United States Department of Defense". www.defenselink.mil. Archived from the original on 30 December 2004. Retrieved 8 May 2018.

^ "Life in Pakistan Navy:Ranks". Pakistan Navy Official Website. 2012. Archived from the original on 24 January 2013. Retrieved 13 July 2017.

[1] "Triservice Officers Pay and Grade" (PDF). UK Government. Archived (PDF) from the original on 2016-03-04. Retrieved 2013-04-25.

[2] "A Dane giving the orders". Admiral Danish Fleet. Archived from the original on 2013-10-22. Retrieved 2013-04-25.

[3] "US Navy Ranks". United States Navy. Archived from the original on 2013-05-02. Retrieved 2013-04-25.

[4] "Uniform Ranks". Royal Australian Navy. Archived from the original on 2015-01-24. Retrieved 2013-04-25.

[stanag-5] "NATO Standard Agreement (STANAG) 2116: NATO Codes for Grades of Military Personnel". NATO standardization agreement (5 ed.). NATO Standardization Agency (published 25 February 2010). 13 March 1996. Archived from the original on 1 September 2011. Retrieved 13 July 2017.

[6] "United States Navy - O-4 Lieutenant Commander". FederalPay.org. Archived from the original on 2018-05-08. Retrieved 2017-05-22.

[7] "MILPERSMAN 5000-010" (PDF). U.S. Navy. 22 Aug 2002. Archived (PDF) from the original on 6 October 2016. Retrieved 28 June 2016.

[USNHist-8] "Lieutenant Commander mokong Ibana". Archived from the original on 27 May 2009. Retrieved 6 October 2009.

[9] "United States Department of Defense". www.defenselink.mil. Archived from the original on 30 December 2004. Retrieved 8 May 2018.

[10] "Life in Pakistan Navy:Ranks". Pakistan Navy Official Website. 2012. Archived from the original on 24 January 2013. Retrieved 13 July 2017.

Common military ranks in English
Navies	Armies	Air forces
Commissioned officers
Admiral of the fleet	Field marshal or General of the Army	Marshal of the air force
Admiral	General	Air chief marshal
Vice admiral	Lieutenant general	Air marshal
Rear admiral	Major general	Air vice-marshal
Commodore	Brigadier or brigadier general	Air commodore
Captain	Colonel	Group captain
Commander	Lieutenant colonel	Wing commander
Lieutenant commander	Major or Commandant	Squadron leader
Lieutenant	Captain	Flight lieutenant
Lieutenant junior grade or sub-lieutenant	Lieutenant or first lieutenant	Flying officer
Ensign or midshipman	Second lieutenant	Pilot officer
Officer cadet	Officer cadet	Flight cadet
Enlisted grades
Warrant officer or chief petty officer	Warrant officer or sergeant major	Warrant officer
Petty officer	Sergeant	Sergeant
Leading seaman	Corporal or bombardier	Corporal
Seaman	Private or gunner or trooper	Aircraftman or airman
Talk·View

v t e United States uniformed services commissioned officer and officer candidate ranks
Pay grade / branch of service	Officer candidate	O-1	O-2	O-3	O-4	O-5	O-6	O-7	O-8	O-9	O-10	O-11	Special grade
Insignia	^[1]			^[6]					^[6]	^[6]	^[6]		[2]
Army	CDT / OC	2LT	1LT	CPT	MAJ	LTC	COL	BG	MG	LTG	GEN	GA^[3]	GAS^[3]
Marine Corps	Midn / Cand	2ndLt	1stLt	Capt	Maj	LtCol	Col	BGen	MajGen	LtGen	Gen	^[5]	^[5]
Navy	MIDN / OC	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	FADM^[3]	AN^[3]
Air Force	Cadet / OT / OC	2d Lt	1st Lt	Capt	Maj	Lt Col	Col	Brig Gen	Maj Gen	Lt Gen	Gen	GAF^[3]	^[5]
Coast Guard	CDT / OC	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	^[5]	^[5]
PHS Corps	^[OC]	ENS	LTJG	LT	LCDR	CDR	CAPT	RADM	RADM	VADM	ADM	^[5]	^[5]
NOAA Corps	OC	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	^[4]	^[5]	^[5]
^[1] No universal insignia for officer candidate rank; Navy candidate insignia shown ^[2]Official 1945 proposal for General of the Armies insignia; John J. Pershing's GAS insignia: ; George Dewey's Admiral of the Navy insignia: ^[3] Rank used for specific officers in wartime only, not permanent addition to rank structure ^[4] Grade is authorized by the U.S. Code for use but has not been created ^[5] Grade has never been created or authorized ^[6] USAF and U.S. Army insignia shown

v t e United States warrant officer ranks
	W-1	W-2	W-3	W-4	W-5
Army	WO1	CW2	CW3	CW4	CW5
Marine Corps	WO1	CWO2	CWO3	CWO4	CWO5
Navy	WO1^[1]	CWO2	CWO3	CWO4	CWO5
Air Force	WO1^[1]	CWO2^[1]	CWO3^[1]	CWO4^[1]	CWO5^[1]
Coast Guard	WO1^[1]	CWO2	CWO3	CWO4	^[2]
PHS Corps	^[2]	^[2]	^[2]	^[2]	^[3]
NOAA Corps	^[3]	^[3]	^[3]	^[3]	^[3]
^[1]Grade inactive ^[2]Grade is authorized for use by U.S. Code but has not been created ^[3]Grade never created or authorized

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