::Lieutenant commander

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A US Navy lieutenant commander's sleeve/shoulder insignia

Module:WPMILHIST Infobox style|header_bar}}| Common military ranks in English
Navies	Armies	Air forces
Module:WPMILHIST Infobox style|header_bar}}| Commissioned officers
Admiral of the fleet	Marshal or Field marshal	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
Sub-lieutenant	Lieutenant or First lieutenant	Flying officer
Ensign	Second lieutenant	Pilot officer
Midshipman	Officer cadet	Officer cadet
Module:WPMILHIST Infobox style|header_bar}}| Enlisted grades
Warrant officer or Chief petty officer	Warrant officer or Sergeant major	Warrant officer
Petty officer	Sergeant	Sergeant
Leading seaman	Corporal	Corporal
Seaman	Private	Aircraftman

Naval officer ranks
Flag officers:
Admiral of the fleet • Fleet admiral • Grand admiral Admiral • General admiral Vice admiral • Squadron vice-admiral • Lieutenant admiral Rear admiral • Counter admiral • Divisional admiral Commodore • Flotilla admiral
Senior officers:
Captain • Captain at sea • Captain of sea and war • Ship-of-the-line captain Commander • Frigate captain Lieutenant commander • Corvette captain
Junior officers:
Captain lieutenant • Lieutenant • Ship-of-the-line lieutenant Frigate lieutenant • Lieutenant (junior grade) • Sub-lieutenant Corvette lieutenant • Ensign Midshipman

Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> LtCdr.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> or LCDR<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>) 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.<ref name='stanag'>{{#invoke:citation/CS1|citation |CitationClass=book }}</ref>

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. They are also senior department officers in naval aviation squadrons.

Lieutenant commander sections
Intro  Etymology  Origins  United Kingdom  Canada  United States  Pakistan  Ireland  Other countries  References  

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