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|Hierarchy of naval officer ranks|
|Admiral of the navy
Admiral of the fleet • Fleet admiral
Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCdr) 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.
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, usually addresses officers using the higher grade of the rank. For example, a lieutenant junior grade is addressed simply as "Lieutenant," and a lieutenant commander is addressed as "Commander."
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.
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. 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).
In the Royal Canadian Navy, the rank is the naval rank equal to Major in the army or air force and is the firstsenior officer rank. Lieutenant Commanders are senior to Lieutenants (N) and to army and air force Captains, and are junior to Commanders and Lieutenant Colonels.
There are two insignia used by US lieutenant commanders. On service khakis and all working uniforms, lieutenant commanders wear a gold oak leaf collar device, similar to the ones worn by a 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, crossed oak leaves for Civil Engineer Corps, etc.).
This rank is also used on in Pakistan Navy.
The rank of lieutenant commander is also used in the Irish Naval Service, having a similar implication to the RN rank. It should be noted that 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.
The corresponding rank 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 Navy and Portuguese Navy is captain lieutenant, in the Russian Navy it is "captain of the third rank" (капитан 3-го ранга), and in the Polish Navy it is komandor podporucznik, the equal rank in Finnish Navy is komentajakapteeni, "commander captain".
|Wikimedia Commons has media related to Lieutenant commander.|
- "Triservice Officers Pay and Grade". UK Government. Retrieved 2013-04-25.
- "A Dane giving the orders". Admiral Danish Fleet. Retrieved 2013-04-25.
- "US Navy Ranks". United States Navy. Retrieved 2013-04-25.
- NATO Standard Agreement (STANAG) 2116: NATO Codes for Grades of Military Personnel. NATO Standardization Agency.
- "Lieutenant Commander mokong Ibana". Retrieved 6 October 2009.
|Commissioned officer ranks of the British Armed Forces|
|NATO rank code||Student Officer||OF-1||OF-2||OF-3||OF-4||OF-5||OF-6
|Royal Navy||O Cdt||Mid||SLt||Lt||Lt Cdr||Cdr||Capt||Cdre||RAdm
|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
|Royal Air Force||OC / SO||APO / Plt Off||Fg Off||Flt Lt||Sqn Ldr||Wg Cdr||Gp Capt||Air Cdre||AVM||Air Mshl||Air Chf Mshl
|United States commissioned officer and officer candidate ranks|
|Pay grade / Branch of service||Officer
|Air Force||Cadet / OT / OC||2d Lt||1st Lt||Capt||Maj||Lt Col||Col||Brig Gen||Maj Gen||Lt Gen||Gen||GAF|||
|Army||CDT / OC||2LT||1LT||CPT||MAJ||LTC||COL||BG||MG||LTG||GEN||GA||GAS|
|Marine Corps||Midn / Cand||2ndLt||1stLt||Capt||Maj||LtCol||Col||BGen||MajGen||LtGen||Gen|||||
|Navy||MIDN / OC||ENS||LTJG||LT||LCDR||CDR||CAPT||RDML||RADM||VADM||ADM||FADM||AN|
|Coast Guard||CDT / OC||ENS||LTJG||LT||LCDR||CDR||CAPT||RDML||RADM||VADM||ADM|||||
|Public Health Service||||ENS||LTJG||LT||LCDR||CDR||CAPT||RADM||RADM||VADM||ADM|||||
|National Oceanic and
Unofficial 1945 proposal for General of the Armies insignia; John J. Pershing's GAS insignia: ; George Dewey's AN insignia:
 Grade is inactive; requires Congressional approval for re-activation
 Grade is authorized by the U.S. Code for use but has not been created
 Grade has never been created or authorized
|United States warrant officer ranks|
|Public Health Service|||||||||||
|National Oceanic and
 Grade is authorized for use by U.S. Code but has not been created
 Grade never created or authorized