Commander (commonly abbreviated as Cmdr.) is a common

naval A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral zone, littoral, or ocean-borne combat operations and ...

officer rank An officer is a person who holds a position of authority as a member of an armed force or uniformed service. Broadly speaking, "officer" means a commissioned officer, a non-commissioned officer, or a warrant officer. However, absent context ...

. Commander is also used as a rank or title in other formal organizations, including several

police The police are a constituted body of persons empowered by a state, with the aim to enforce the law, to ensure the safety, health and possessions of citizens, and to prevent crime and civil disorder. Their lawful powers include arrest and t ...

forces. In several countries this naval rank is termed

frigate captain Frigate captain is a naval rank in the naval forces of several countries. Corvette captain lies one level below frigate captain. It is usually equivalent to the Commonwealth/US Navy rank of commander. Countries using this rank include Argentina ...

. Commander is also a generic term for an officer commanding any armed forces unit, for example "platoon commander", "brigade commander" and "squadron commander". In the police, terms such as "borough commander" and "incident commander" are used.

Commander as a naval and air force rank

Commander is a rank used in navies but is very rarely used as a rank in

armies An army (from Old French ''armee'', itself derived from the Latin verb ''armāre'', meaning "to arm", and related to the Latin noun ''arma'', meaning "arms" or "weapons"), ground force or land force is a fighting force that fights primarily on ...

. The title, originally "master and commander", originated in the 18th century to describe naval officers who commanded ships of war too large to be commanded by a lieutenant but too small to warrant the assignment of a

post-captain Post-captain is an obsolete alternative form of the rank of Captain (Royal Navy), captain in the Royal Navy. The term served to distinguish those who were captains by rank from: * Officers in command of a naval vessel, who were (and still are) ...

and (before about 1770) a

sailing master The master, or sailing master, is a historical rank for a naval officer trained in and responsible for the navigation of a sailing vessel. The rank can be equated to a professional seaman and specialist in navigation, rather than as a military ...

; the commanding officer served as his own master. In practice, these were usually unrated

sloops-of-war In the 18th century and most of the 19th, a sloop-of-war in the Royal Navy was a warship with a single gun deck that carried up to eighteen guns. The rating system covered all vessels with 20 guns and above; thus, the term ''sloop-of-war'' enc ...

of no more than 20 guns. The

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

shortened "master and commander" to "commander" in 1794; however, the term "master and commander" remained (unofficially) in common parlance for several years. The equivalent American rank

master commandant Master commandant was a rank within the early United States Navy. Both the Continental Navy, started in 1775, and the United States Navy created by the United States Congress, in 1796, had just two commissioned ranks, lieutenant and captain. Maste ...

remained in use until changed to

commander Commander (commonly abbreviated as Cmdr.) is a common naval officer rank. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain. ...

in 1838. A corresponding rank in some navies is

. In the 20th and 21st centuries, the rank has been assigned the NATO rank code of OF-4. Various functions of commanding officers were also styled ''commander''. In the navy of the

Dutch Republic The United Provinces of the Netherlands, also known as the (Seven) United Provinces, officially as the Republic of the Seven United Netherlands (Dutch: ''Republiek der Zeven Verenigde Nederlanden''), and commonly referred to in historiography ...

, anyone who commanded a ship or a fleet without having an appropriate rank to do so could be called a . This included ''ad hoc'' fleet commanders and acting captains (). In the fleet of the

Admiralty of Zeeland The Admiralty of Zeeland was one of the five admiralties of the navy of the Dutch Republic. One of its famous admirals was Joost Banckert. The Admiralty of Zeeland was disestablished in 1795, alongside the other admiralties. Board of the Zeeland ...

however, was a formal rank, the equivalent of (rear-admiral) in the other Dutch admiralties. The Dutch use of the title as a rank lives on in the

Royal Netherlands Navy The Royal Netherlands Navy ( nl, Koninklijke Marine, links=no) is the naval force of the Kingdom of the Netherlands. During the 17th century, the navy of the Dutch Republic (1581–1795) was one of the most powerful naval forces in the world an ...

, as the equivalent of

commodore Commodore may refer to: Ranks * Commodore (rank), a naval rank ** Commodore (Royal Navy), in the United Kingdom ** Commodore (United States) ** Commodore (Canada) ** Commodore (Finland) ** Commodore (Germany) or ''Kommodore'' * Air commodore, a ...

. In the

Royal Netherlands Air Force , colours = , colours_label = , march = ''Parade March of the Royal Netherlands Air Force'' , mascot = , anniversaries = , equipment ...

, however, this rank is known by the English spelling of which is the Dutch equivalent of the British air commodore.

Australia

The rank of commander in the

Royal Australian Navy The Royal Australian Navy (RAN) is the principal naval force of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond AM, RAN. CN is also jointly responsible to the Minister of ...

(RAN) is identical in description to that of a commander in the British

. RAN chaplains who are in divisions 1, 2 or 3 (of five divisions) have the equivalent rank standing of commanders. This means that to officers and NCOs below the rank of commander, lieutenant colonel, or wing commander, the chaplain is a superior. To those officers ranked higher than commander, the chaplain is subordinate. Although this equivalency exists, RAN chaplains who are in divisions 1, 2 or 3 do not actually wear the rank of commander, and they hold no command privilege.

Canada

Scandinavia

Commander is a naval rank in Scandinavia ( in Danish and Norwegian, in Swedish) equivalent to the Anglo-American naval rank of captain. The Scandinavian rank of commander is immediately above "commander-captain" ( no, Kommandørkaptein, sv,

Kommendörkapten Commander (Cdr) ( sv, Kommendörkapten, Kk) is a senior-grade officer rank in the Swedish Navy, ranking below captain and above lieutenant commander. The rank is equivalent to lieutenant colonel in the Swedish Army, Swedish Air Force and the Sw ...

, da, Kommandørkaptajn), which is equivalent to the Anglo-American naval rank of commander.

Denmark

In Denmark, the rank of commander exists as (commander captain or commanding captain), which is senior to (captain) and (commander), which is senior to . ''Kommandørkaptajn'' is officially translated into Englis as "Commander, Senior Grade", while ''orlogskaptajn'' is officially translated as '"Commander."

United Kingdom

Royal Navy

A commander in the Royal Navy is above the rank of

lieutenant commander 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 i ...

, below the rank of

captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police department, election precinct, e ...

, and is equivalent in rank to a

lieutenant colonel Lieutenant colonel ( , ) is a rank of commissioned officers in the armies, most marine forces and some air forces of the world, above a major and below a colonel. Several police forces in the United States use the rank of lieutenant colone ...

in the army. A commander may command a

frigate A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat. The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and ...

destroyer In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers. They were originally developed in ...

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

, aviation squadron or shore installation, or may serve on a staff.

Royal Air Force

Since the British

Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...

's mid-rank officers' ranks are modelled on those of the

, the term

wing commander Wing commander (Wg Cdr in the RAF, the IAF, and the PAF, WGCDR in the RNZAF and RAAF, formerly sometimes W/C in all services) is a senior commissioned rank in the British Royal Air Force and air forces of many countries which have historical ...

is used as a rank, and this is the equivalent of a

in the army or a commander in the navy. The rank of wing commander is above that of

squadron leader Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also ...

and below that of

group captain Group captain is a senior commissioned rank in the Royal Air Force, where it originated, as well as the air forces of many countries that have historical British influence. It is sometimes used as the English translation of an equivalent rank i ...

. In the former

Royal Naval Air Service The Royal Naval Air Service (RNAS) was the air arm of the Royal Navy, under the direction of the Admiralty's Air Department, and existed formally from 1 July 1914 to 1 April 1918, when it was merged with the British Army's Royal Flying Corps t ...

, which was merged with the

Royal Flying Corps "Through Adversity to the Stars" , colors = , colours_label = , march = , mascot = , anniversaries = , decorations ...

to form the Royal Air Force in 1918, the pilots held appointments as well as their normal ranks in the Royal Navy, and they wore insignia appropriate to the appointment instead of the rank. A flight commander wore a star above a lieutenant's two rank stripes, squadron commander wore two stars above two rank stripes (less than eight years' seniority) or two-and-a-half rank stripes (over eight years seniority), and wing commander wore three rank stripes. The rank stripes had the usual Royal Navy curl, and they were surmounted by an eagle.

United States

In the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mult ...

United States Public Health Service Commissioned Corps The United States Public Health Service Commissioned Corps (PHSCC), also referred to as the Commissioned Corps of the United States Public Health Service, is the federal uniformed service of the U.S. Public Health Service (PHS) and one of the ...

, and

National Oceanic and Atmospheric Administration Commissioned Officer Corps The National Oceanic and Atmospheric Administration Commissioned Officer Corps, known informally as the NOAA Corps, is one of eight federal uniformed services of the United States, and operates under the National Oceanic and Atmospheric Administ ...

, commander (abbreviated "CDR") is a senior-grade officer rank, with the pay grade of O-5. Commander ranks above

(O-4) and below

. (O-6). Commander is equivalent to the rank of

in the

United States Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...

United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal ...

United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through combi ...

, and

United States Space Force The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space ...

. Notably, commander is the first rank at which the holder wears an embellished cap, whereas officers of the other military services are entitled to embellishment of similar headgear at O-4 rank. Promotion to commander in the U.S. Navy is governed by

United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national secu ...

policies derived from the

Defense Officer Personnel Management Act The Defense Officer Personnel Management Act (DOPMA) () is a United States federal law passed in 1980 that for the first time standardized officer personnel management across the United States Armed Forces. It established ceilings on the number of ...

(DOPMA) of 1980 or its companion

Reserve Officer Personnel Management Act Reserve or reserves may refer to: Places * Reserve, Kansas, a US city * Reserve, Louisiana, a census-designated place in St. John the Baptist Parish * Reserve, Montana, a census-designated place in Sheridan County * Reserve, New Mexico, a US v ...

(ROPMA). DOPMA/ROPMA guidelines suggest that 70% of lieutenant commanders should be promoted to commander after serving a minimum of three years at their present rank and after attaining 15 to 17 years of cumulative commissioned service, although this percentage may vary and be appreciably less for certain officer designators (i.e., primary "specialties") depending on defense budgets, force structure, and the needs of the service.

Gallery

File:Generic-Navy-6.svg, Commander
(

Antigua and Barbuda Coast Guard The Antigua and Barbuda Defence Force Coast Guard is the maritime branch of the Antigua and Barbuda Defence Force. The purpose of the coast guard is to maintain the countries interests, and along with the Antigua and Barbuda Defence Force Air Wing, ...

) File:Generic-Navy-6.svg, Commander
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Royal Bahamas Defence Force The Royal Bahamas Defence Force (RBDF) is the military of The Bahamas. Since The Bahamas does not have an army or an air force, its navy composes the entirety of its armed forces. Under The Defence Act, the Royal Bahamas Defence Force has been m ...

) File:Generic-Navy-6.svg, Commander
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Bangladesh Navy The Bangladesh Navy ( bn, বাংলাদেশ নৌবাহিনী, Bangladesh Nou Bahini) is the naval warfare branch of the Bangladesh Armed Forces, responsible for Bangladesh's of maritime territorial area, and the defence of imp ...

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( Royal Brunei Navy) File:Generic-Navy-6.svg, Commander
(

Barbados Coast Guard The Barbados Coast Guard is the maritime element of the Barbados Defence Force. Its responsibilities include territorial defence, patrolling Barbados' territorial waters and Exclusive Economic Zone (EEZ), as well as conducting maritime law enforce ...

) File:Belize_Coast_Guard_OF-4.svg, Commander
(

Belize Coast Guard The Belize Coast Guard (until 2016, the Belize National Coast Guard Service) is the maritime security, search and rescue, and the maritime and law enforcement service branch of Belize. The new service began operations with seven impounded Eduar ...

) File:Generic-Navy-6.svg, Commander
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Royal Canadian Navy The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the Navy, naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack s ...

) File:Generic-Navy-8.svg,
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Royal Danish Navy The Royal Danish Navy ( da, Søværnet) is the Naval warfare, sea-based branch of the Danish Defence force. The RDN is mainly responsible for maritime defence and maintaining the sovereignty of Denmark, Danish territorial waters (incl. Faroe Isla ...

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Republic of Fiji Navy The Fijian Navy was created when Fiji ratified the recently created United Nations Convention on Laws of the Sea. The Convention established that maritime nation had an Exclusive Economic Zone of 200 kilometres, which extended Fiji's waters twe ...

) File:Finland-Navy-OF-4.svg,

(

Finnish Navy The Finnish Navy ( fi, Merivoimat, sv, Marinen) is one of the branches of the Finnish Defence Forces. The navy employs 2,300 people and about 4,300 conscripts are trained each year. Finnish Navy vessels are given the ship prefix "FNS", short for ...

) File:Generic-Navy-6.svg, Commander
(

Gambian Navy The Gambia Armed Forces, also known as the Armed Forces of The Gambia, consists of three branches: the Gambia National Army (GNA), the Gambia Navy, and the Republican National Guard (RNG). It formerly included the Gambia National Gendarmerie (GNG) ...

) File:Generic-Navy-6.svg, Commander
(

Ghana Navy The Ghana Navy (GN) is the naval warfare organizational military branch of the Ghanaian Armed Forces (GAF). The Ghanaian Navy, along with the Ghanaian Army (GA) and Ghanaian Air Force (GHF), make up the Ghanaian Armed Forces (GAF) which are co ...

) File:Generic-Navy-6.svg, Commander
( Guyana Coast Guard) File:Generic-Navy-6.svg, Commander

(

Indian Navy The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates sig ...

) File:Generic-Navy-(star)-O5.svg, Commander

(

Irish Naval Service The Naval Service ( ga, An tSeirbhís Chabhlaigh) is the maritime component of the Defence Forces of Ireland and is one of the three branches of the Irish Defence Forces. Its base is in Haulbowline, County Cork. Though preceded by earlier mar ...

) File:Generic-Navy-6.svg, Commander
(

Jamaican Coast Guard The Jamaica Defence Force (JDF) is the combined military of Jamaica, consisting of an infantry Regiment and Reserve Corps, an Air Wing, a Coast Guard fleet and a supporting Engineering Unit. The JDF is based upon the British military model, with ...

) File:Generic-Navy-(star)-O5.svg, Commander
(

Liberian National Coast Guard The Liberian National Coast Guard is the naval force of Liberia, part of the Armed Forces of Liberia. Its main duties are law enforcement along Liberia's coast and in its maritime area, and aiding those in distress. History The Liberian National C ...

) File:Generic-Navy-7.svg,
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Lithuanian Naval Force The Lithuanian Navy ( lt, Lietuvos Karinės jūrų pajėgos) is the naval arm of the Lithuanian Armed Forces. Though formally established on 1 August 1935 its roots stretch back as far as naval engagements on the Baltic Sea in the Medieval period ...

) File:Generic-Navy-6.svg,
(

Royal Malaysian Navy The Royal Malaysian Navy (RMN, ms, Tentera Laut Diraja Malaysia; TLDM; Jawi: ) is the naval arm of the Malaysian Armed Forces. RMN is the main agency responsible for the country's maritime surveillance and defense operations. RMN's area of o ...

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Namibian Navy The Namibian Navy is the maritime warfare branch of the Namibian Defence Force. History Development of Namibia's navy has been slow, and the force was only formally established on 11 September 1998 as a maritime wing and in 2004 as a fully f ...

) File:Netherlands-Navy-OF-6.svg,
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) File:Generic-Navy-6.svg, Commander
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Royal New Zealand Navy The Royal New Zealand Navy (RNZN; mi, Te Taua Moana o Aotearoa, , Sea Warriors of New Zealand) is the maritime arm of the New Zealand Defence Force. The fleet currently consists of nine ships. The Navy had its origins in the Naval Defence Act ...

) File:Generic-Navy-6.svg, Commander
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Nigerian Navy The Nigerian Navy (NN) is a branch of the Nigerian Armed Forces. It is among the largest navies on the African continent, consisting of several thousand personnel, including those of the Coast Guard. History The Nigerian Navy owes its origin to ...

) File:Generic-Navy-8.svg,
(

Royal Norwegian Navy The Royal Norwegian Navy ( no, Sjøforsvaret, , Sea defence) is the branch of the Norwegian Armed Forces responsible for naval operations of Norway. , the Royal Norwegian Navy consists of approximately 3,700 personnel (9,450 in mobilized state, 3 ...

) File:Generic-Navy-6.svg, Commander

(

Pakistan Navy ur, ہمارے لیے اللّٰہ کافی ہے اور وہ بہترین کارساز ہے۔ English language, English: Allah is Sufficient for us - and what an excellent (reliable) Trustee (of affairs) is He!(''Quran, Qur'an, Al Imran, 3:173' ...

) File:Generic-Navy-12.svg,
( Polish Navy) File:Romania-Navy-OF-5-Sleeve.svg,
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Romanian Naval Forces The Romanian Navy ( ro, Forțele Navale Române) is the navy branch of the Romanian Armed Forces; it operates in the Black Sea and on the Danube. It traces its history back to 1860. History The Romanian Navy was founded in 1860 as a river flot ...

) File:Generic-Navy-6.svg, Commander
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Saint Kitts and Nevis Coast Guard The Saint Kitts and Nevis Defence Force is the military of Saint Kitts and Nevis. It currently consists of an infantry unit (the St. Kitts Nevis Regiment) and a maritime unit (the St. Kitts Nevis Coast Guard). Both units having regular and reserv ...

) File:Generic-Navy-6.svg, Commander
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Sierra Leone Navy The Republic of Sierra Leone Armed Forces (RSLAF) are the armed forces of Sierra Leone, responsible for the territorial security of Sierra Leone's borders and defending the national interests of Sierra Leone, within the framework of the 1991 Si ...

) File:Generic-Navy-6.svg, Commander
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South African Navy The South African Navy (SA Navy) is the naval warfare branch of the South African National Defence Force. The Navy is primarily engaged in maintaining a conventional military deterrent, participating in counter-piracy operations, fishery prot ...

) File:Generic-Navy-6.svg, Commander
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Sri Lanka Navy ta, இலங்கை கடற்படை , image = Sri Lanka Naval Seal.png , image_size = 180px , caption = Emblem of Sri Lanka Navy , dates = , c ...

) File:Generic-Navy-8.svg,
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Swedish Navy The Swedish Navy ( sv, Svenska marinen) is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet () – as well as marine units, the Amphibious Corps (). In Swedish, vessels o ...

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Tanzania Naval Command The Tanzania Naval Command ( sw, Kamandi ya Jeshi la Majini) is the naval military branch of the Tanzania People's Defence Force (TPDF). It was established in 1971 with assistance from China. History In the years immediately following independ ...

) File:Generic-Navy-6.svg, Commander
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Tongan Maritime Force The Tongan Maritime Force is the naval arm of His Majesty's Armed Forces of Tonga. History The TDS was founded on 10 March 1973 by King Tāufaʻāhau Tupou IV, who also commissioned the first craft on that date. The first craft was VOEA ''Nga ...

) File:Generic-Navy-6.svg, Commander
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Trinidad and Tobago Coast Guard The Trinidad and Tobago Defence Force (TTDF) is the military organization responsible for the defence of the twin island Republic of Trinidad and Tobago. It consists of the Trinidad and Tobago Regiment, the Trinidad and Tobago Coast Guard, the ...

) File:Generic-Navy-6.svg, Commander
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) File:US Navy O5 insignia.svg, Commander
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) File:USCG O-5 insignia.svg, Commander
(

)

Commander as a military appointment

For instance, as in various small colonial settlements (such as various

Caribbean The Caribbean (, ) ( es, El Caribe; french: la Caraïbe; ht, Karayib; nl, De Caraïben) is a region of the Americas that consists of the Caribbean Sea, its islands (some surrounded by the Caribbean Sea and some bordering both the Caribbean Se ...

islands) commanding the

garrison A garrison (from the French ''garnison'', itself from the verb ''garnir'', "to equip") is any body of troops stationed in a particular location, originally to guard it. The term now often applies to certain facilities that constitute a mil ...

was the crux of the top job, the military title ''Commandeur'' could be used instead of a civilian gubernatorial style, not unlike the Portuguese

captain-major A donatary captain was a Portuguese colonial official to whom the Crown granted jurisdiction, rights, and revenues over some colonial territory. The recipients of these grants were called (donataries), because they had been given the grant as a ( ...

British Army

In the

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurk ...

, the term "commander" is officially applied to the

non-commissioned officer A non-commissioned officer (NCO) is a military officer who has not pursued a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. (Non-officers, which includes most or all enli ...

in charge of a

section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sign ...

(section commander), vehicle (vehicle commander) or gun (gun commander), to the

subaltern Subaltern may refer to: *Subaltern (postcolonialism), colonial populations who are outside the hierarchy of power * Subaltern (military), a primarily British and Commonwealth military term for a junior officer * Subalternation, going from a univer ...

commanding a

platoon A platoon is a military unit typically composed of two or more squads, sections, or patrols. Platoon organization varies depending on the country and the branch, but a platoon can be composed of 50 people, although specific platoons may range ...

(platoon commander), or to the

brigadier Brigadier is a military rank, the seniority of which depends on the country. In some countries, it is a senior rank above colonel, equivalent to a brigadier general or commodore, typically commanding a brigade of several thousand soldiers. In ...

commanding a

brigade A brigade is a major tactical military formation that typically comprises three to six battalions plus supporting elements. It is roughly equivalent to an enlarged or reinforced regiment. Two or more brigades may constitute a division. Br ...

(brigade commander). Other officers commanding units are usually referred to as the

officer commanding The officer commanding (OC), also known as the officer in command or officer in charge (OiC), is the commander of a sub-unit or minor unit (smaller than battalion size), principally used in the United Kingdom and Commonwealth. In other countries, ...

(OC),

commanding officer The commanding officer (CO) or sometimes, if the incumbent is a general officer, commanding general (CG), is the officer in command of a military unit. The commanding officer has ultimate authority over the unit, and is usually given wide latitu ...

(CO), general officer commanding (GOC), or general officer commanding-in-chief (GOC-C), depending on rank and position, although the term "commander" may be applied to them informally. In the

First Aid Nursing Yeomanry The First Aid Nursing Yeomanry (Princess Royal's Volunteer Corps) (FANY (PRVC)) is a British independent all-female registered charity formed in 1907 and active in both nursing and intelligence work during the World Wars. Its members wear a mili ...

commander is a rank equivalent to

major Major (commandant in certain jurisdictions) is a military rank of commissioned officer status, with corresponding ranks existing in many military forces throughout the world. When used unhyphenated and in conjunction with no other indicators ...

Netherlands

''Commandeur'' as title of colonial office was the case on the island of

Tobago Tobago () is an List of islands of Trinidad and Tobago, island and Regions and municipalities of Trinidad and Tobago, ward within the Trinidad and Tobago, Republic of Trinidad and Tobago. It is located northeast of the larger island of Trini ...

in the Dutch colony of

Nieuw Walcheren The history of Tobago covers a period from the earliest human settlements on the island of Tobago in the Archaic period, through its current status as a part of the Republic of Trinidad and Tobago. Originally settled by indigenous people, the isl ...

New Zealand Army

The usage is similar/identical to the

, with the term "commander" having been applied to the colonel who was Commander, 2 Land Force Group, Linton Camp, and now to Commander, 1 Brigade.

Spanish Armed Forces and ''Guardia Civil''

In the

Spanish Army The Spanish Army ( es, Ejército de Tierra, lit=Land Army) is the terrestrial army of the Spanish Armed Forces responsible for land-based military operations. It is one of the oldest active armies — dating back to the late 15th century. The ...

, the

Spanish Air Force , colours = , colours_label = , march = Spanish Air and Space Force Anthem , mascot = , anniversaries = 10 December , equipment ...

and the

marine infantry Marines, or naval infantry, are typically a military force trained to operate in littoral zones in support of naval operations. Historically, tasks undertaken by marines have included helping maintain discipline and order aboard the ship (refle ...

, the term commander is the literal translation of ''comandante'', the Spanish equivalent of a Commonwealth

. The ''

Guardia Civil The Civil Guard ( es, Guardia Civil, link=no; ) is the oldest law enforcement agency in Spain and is one of two national police forces. As a national gendarmerie force, it is military in nature and is responsible for civil policing under the a ...

'' shares the army ranks, and the officer commanding a house-garrison (usually an NCO or a lieutenant, depending on the size) is addressed as the ''comandante de puesto'' (post commander).

United States Army

In the

, the term "commander" is officially applied to the

of army units; hence, there are company commanders, battalion commanders, brigade commanders, and so forth. At the highest levels of

U.S. military The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the ...

command structure, "commander" also refers to what used to be called commander-in-chief, or CINC, until October 24, 2002, although the term CINC is still used in casual speech.

United States Air Force

In the

, the term "commander" (abbreviated "CC" in office symbols, i.e. "OG/CC" for "operations group commander") is applied officially to the

of an Air Force unit; hence, there are

flight Flight or flying is the process by which an object moves through a space without contacting any planetary surface, either within an atmosphere (i.e. air flight or aviation) or through the vacuum of outer space (i.e. spaceflight). This can be a ...

commanders,

squadron Squadron may refer to: * Squadron (army), a military unit of cavalry, tanks, or equivalent subdivided into troops or tank companies * Squadron (aviation), a military unit that consists of three or four flights with a total of 12 to 24 aircraft, ...

commanders,

group A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic iden ...

commanders,

wing A wing is a type of fin that produces lift while moving through air or some other fluid. Accordingly, wings have streamlined cross-sections that are subject to aerodynamic forces and act as airfoils. A wing's aerodynamic efficiency is expres ...

commanders,

numbered air force A Numbered Air Force (NAF) is a type of organization in the United States Air Force that is subordinate to a List of Major Commands of the United States Air Force, major command (MAJCOM) and has assigned to it operational units such as wings, squ ...

commanders, and commanders of

major command Major Command or Major Commands are large formations of the United States Armed Forces. Historically, a Major Command is the highest level of command. Within the United States Army, the acronym MACOM is used for Major Command. Within the United Stat ...

s. In rank, a flight commander is typically a

lieutenant A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a commissioned officer rank in the armed forces of many nations. The meaning of lieutenant differs in different militaries (see comparative military ranks), but it is often sub ...

, a

commander is typically a

, a

commander is typically a

colonel Colonel (abbreviated as Col., Col or COL) is a senior military officer rank used in many countries. It is also used in some police forces and paramilitary organizations. In the 17th, 18th and 19th centuries, a colonel was typically in charge of ...

, a

commander is typically a senior colonel or a

brigadier general Brigadier general or Brigade general is a military rank used in many countries. It is the lowest ranking general officer in some countries. The rank is usually above a colonel, and below a major general or divisional general. When appointed ...

, a numbered air force commander is a

major general Major general (abbreviated MG, maj. gen. and similar) is a military rank used in many countries. It is derived from the older rank of sergeant major general. The disappearance of the "sergeant" in the title explains the apparent confusion of a ...

lieutenant general Lieutenant general (Lt Gen, LTG and similar) is a three-star military rank (NATO code OF-8) used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the ...

, and the commander of a major command is a

general A general officer is an Officer (armed forces), officer of highest military ranks, high rank in the army, armies, and in some nations' air forces, space forces, and marines or naval infantry. In some usages the term "general officer" refers t ...

United States Space Force

In the

, the term "commander" is applied officially to the commanding officer of a Space Force unit; hence, there are

commanders,

delta Delta commonly refers to: * Delta (letter) (Δ or δ), a letter of the Greek alphabet * River delta, at a river mouth * D ( NATO phonetic alphabet: "Delta") * Delta Air Lines, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also ...

commanders, and commanders of field commands. In rank, a squadron commander is a

, a delta commander is a

, and the commander of a field command is a

Commander as a non-military rank or title

NASA rank

In NASA spacecraft missions since the beginning of

Project Gemini Project Gemini () was NASA's second human spaceflight program. Conducted between projects Mercury and Apollo, Gemini started in 1961 and concluded in 1966. The Gemini spacecraft carried a two-astronaut crew. Ten Gemini crews and 16 individual ...

, one crew member on each spacecraft is designated as mission commander. The commander is the captain of the ship, and makes all real-time critical decisions on behalf of the crew and in coordination with the Mission Control Center (MCC).

Use in aviation

The title of aircraft commander is used in civil aviation to refer to the

pilot in command The pilot in command (PIC) of an aircraft is the person aboard the aircraft who is ultimately responsible for its operation and safety during flight. This would be the captain in a typical two- or three-pilot aircrew, or "pilot" if there is only ...

(commonly referred to as "captain", which is technically an airline rank and not related to the commander's role on board the aircraft).

British police rank

Within the

British police Law enforcement in the United Kingdom is organised separately in each of the legal systems of the United Kingdom: England and Wales, Northern Ireland and Scotland. Most law enforcement is carried out by police officers serving in regional po ...

, Commander is a

chief officer A chief mate (C/M) or chief officer, usually also synonymous with the first mate or first officer, is a licensed mariner and head of the deck department of a merchant ship. The chief mate is customarily a watchstander and is in charge of the ship ...

rank in the two police forces responsible for law enforcement within

London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...

, the

Metropolitan Police The Metropolitan Police Service (MPS), formerly and still commonly known as the Metropolitan Police (and informally as the Met Police, the Met, Scotland Yard, or the Yard), is the territorial police force responsible for law enforcement and ...

and

City of London Police The City of London Police is the territorial police force responsible for law enforcement within the City of London, including the Middle and Inner Temples. The force responsible for law enforcement within the remainder of the London region, ou ...

. In both forces, the rank is senior to

chief superintendent Chief superintendent is a senior rank in police forces, especially in those organised on the United Kingdom, British model. Rank insignia of chief superintendent File:Sa-police-chief-superintendent.png, South Australia Police File:RCMP Chief Su ...

; in the Metropolitan Police it is junior to deputy assistant commissioner and in the City of London Police it is junior to assistant commissioner. In forces outside London, the rank equates to assistant chief constable which bears the same insignia. COLP Commander SQ

The Metropolitan Police introduced the rank in 1946, after the rank of deputy assistant commissioner was split in two, with senior DACs keeping that rank and title and junior DACs being regraded as commanders. The Metropolitan Police also used the rank of deputy commander, ranking just below that of commander, between 1946 and 1968. Officers in charge of the twelve geographical Basic Command Units are referred to as "BCU commander". However, the officers do not hold the rank of commander but instead hold the rank of chief superintendent. Prior to organisational change merging boroughs in to BCUs, officers in charge of policing each of the London's boroughs were given the title "borough commander". A previous exception to this was the borough commander of

Westminster Westminster is an area of Central London, part of the wider City of Westminster. The area, which extends from the River Thames to Oxford Street, has many visitor attractions and historic landmarks, including the Palace of Westminster, Bu ...

, who held the rank of commander due to the size, complexity, and high-profile nature of the borough. The Metropolitan Police Service announced that by summer 2018 the rank would be phased out, along with that of

chief inspector Chief inspector (Ch Insp) is a rank used in police forces which follow the British model. In countries outside Britain, it is sometimes referred to as chief inspector of police (CIP). Usage by country Australia The rank of chief inspector is use ...

. However, in August 2017 it was announced that the new Commissioner

Cressida Dick Dame Cressida Rose Dick (born 16 October 1960) is a British retired senior police officer who served as Commissioner of Police of the Metropolis from 2017 to 2022. She is both the first female and first openly homosexual officer to lead the Me ...

had cancelled the plan to phase them out. The rank badge worn by a commander or an assistant chief constable consists of crossed tipstaves within a

wreath A wreath () is an assortment of flowers, leaves, fruits, twigs, or various materials that is constructed to form a circle . In English-speaking countries, wreaths are used typically as household ornaments, most commonly as an Advent and Chri ...

. Within the Metropolitan Police Service, the tips of the tipstaves are blue and not red, unlike other forces. Until the abolition of the rank of deputy commander in 1968, however, a commander wore the same badge of rank as a deputy assistant commissioner.

Australian police rank

In Australia, commander is a rank used by the Victorian, Tasmanian, Western Australian, South Australian, and

Australian Federal police The Australian Federal Police (AFP) is the national and principal federal law enforcement agency of the Australian Government with the unique role of investigating crime and protecting the national security of the Commonwealth of Australia. Th ...

forces. The insignia consists of a crown over three bath stars in a triangular formation, equivalent to a

in the army. In all four forces, it is junior to the rank of assistant commissioner, and senior to the rank of

, with the exception of Western Australia and Victoria where it is senior to the rank of

superintendent Superintendent may refer to: *Superintendent (police), Superintendent of Police (SP), or Senior Superintendent of Police (SSP), a police rank *Prison warden or Superintendent, a prison administrator *Superintendent (ecclesiastical), a church exec ...

. In New South Wales the position of commander is instated to officers (usually superintendents) in charge of a command or unit.

American police rank

Some large police departments and sheriff's offices in the US have a commander rank. Most commonly, this is the next rank above captain. Examples of this include the

Chicago Police Department The Chicago Police Department (CPD) is the municipal law enforcement agency of the U.S. city of Chicago, Illinois, under the jurisdiction of the City Council. It is the second-largest municipal police department in the United States, behind t ...

Los Angeles Police Department The Los Angeles Police Department (LAPD), officially known as the City of Los Angeles Police Department, is the municipal police department of Los Angeles, California. With 9,974 police officers and 3,000 civilian staff, it is the third-large ...

, San Francisco Police Department,

Portland Police Bureau The Portland Police Bureau (PPB), officially the Portland Bureau of Police, is the law enforcement agency of the city of Portland, the largest city in the U.S. state of Oregon. While oversight of Portland's bureaus shifts among the five City ...

and

Rochester Police Department The Rochester Police Department, also known as the RPD, is the principal law enforcement agency of the City of Rochester, New York, reporting to the city mayor. It currently has approximately 852 officers and support staff, a budget of approxima ...

. In others, such as the

Phoenix Police Department The Phoenix Police Department is the law enforcement agency responsible for the city of Phoenix, Arizona. As of October 2021, the Phoenix Police Department comprises just under 2,800 officers, some 350 below authorized strength of 3,125 and mor ...

and

Saint Paul Police Department The Saint Paul Police Department (SPPD) is the main law enforcement agency with jurisdiction over the City of Saint Paul, Minnesota, United States. It was established in 1854, making it the oldest police organization in the state. The SPPD is t ...

, a commander rank is the next rank above lieutenant, and is equivalent to captain. In the Northport, Florida's police department, however, commanders are below captains. A commander in the LAPD is equivalent to an

inspector Inspector, also police inspector or inspector of police, is a police rank. The rank or position varies in seniority depending on the organization that uses it. Australia In Australian police forces, the rank of inspector is generally the ne ...

in other large US departments (such as the

NYPD The New York City Police Department (NYPD), officially the City of New York Police Department, established on May 23, 1845, is the primary municipal law enforcement agency within the City of New York, the largest and one of the oldest in ...

); the LAPD rank was originally called inspector as well, but was changed in 1974 to commander. The

Metropolitan Police Department of the District of Columbia The Metropolitan Police Department of the District of Columbia (MPDC), more commonly known as the Metropolitan Police Department (MPD), the DC Police, and, colloquially, the DCPD, is the primary law enforcement agency for the District of Columb ...

also uses the rank of commander, which is a grade above inspector and two grades above captain. The insignia worn is commonly every insignia between

and major general, depending on the police or sheriff's department. Albuquerque Police Department commanders are captain equivalents, however, with the brass version of the captain's insignia. In some other police or sheriff's departments where the captains have brass insignias instead of silver, such as Florida's Lee County Sheriff's Department, commanders are above captains, and below majors, with the insignia being brass captain's bars with wreathes around. Northport's police commanders have the insignia of second lieutenants. Commander is also used as a title in certain circumstances, such as the commander of a squad of detectives, who would usually be of the rank of lieutenant, and in some police or sheriff's departments where commanders are ranks, officers or deputies of separate ranks are also referred to as commander by title.

Canadian police rank

The Montreal police force,

Service de police de la Ville de Montréal The Service de police de la Ville de Montréal (SPVM; ) is the municipal police agency for the city of Montreal, Quebec, Canada, and the neighbouring communities in the urban agglomeration of Montreal. With over 4,500 officers and more than 1,300 ...

, uses the rank of commander ''(Commandant)''.

Incident Command System

In the

Incident Command System The Incident Command System (ICS) is a standardized approach to the command, control, and coordination of emergency response providing a common hierarchy within which responders from multiple agencies can be effective. ICS was initially develo ...

the incident commander is in charge of the response to an emergency. The title may pass from person to person as the incident develops.

Chivalric orders

The title of commander is used in chivalric orders such as the

Sovereign Military Order of Malta The Sovereign Military Order of Malta (SMOM), officially the Sovereign Military Hospitaller Order of Saint John of Jerusalem, of Rhodes and of Malta ( it, Sovrano Militare Ordine Ospedaliero di San Giovanni di Gerusalemme, di Rodi e di Malta; ...

for a member senior to a

knight A knight is a person granted an honorary title of knighthood by a head of state (including the Pope) or representative for service to the monarch, the church or the country, especially in a military capacity. Knighthood finds origins in the Gr ...

. The title of knight commander is often used to denote an even higher rank. These conventions are also used by most of the continental orders of chivalry. The United Kingdom uses different classifications. In most of the British orders of knighthood, the grade of knight (or dame) commander is the lowest grade of knighthood, but is above the grade of companion (which does not carry a knighthood). In the

Royal Victorian Order The Royal Victorian Order (french: Ordre royal de Victoria) is a dynastic order of knighthood established in 1896 by Queen Victoria. It recognises distinguished personal service to the British monarch, Canadian monarch, Australian monarch, o ...

and the

Order of the British Empire The Most Excellent Order of the British Empire is a British order of chivalry, rewarding contributions to the arts and sciences, work with charitable and welfare organisations, and public service outside the civil service. It was established ...

, the grade of commander is senior to the grade of lieutenant or officer, but junior to that of knight or dame commander. In the British

Venerable Order of Saint John The Order of St John, short for Most Venerable Order of the Hospital of Saint John of Jerusalem (french: l'ordre très vénérable de l'Hôpital de Saint-Jean de Jérusalem) and also known as St John International, is a British royal order of ...

, a commander ranks below a knight.

Notes

References

{{Reflist Gubernatorial titles Military ranks Military ranks of Australia Military ranks of the Netherlands Police ranks Police ranks in the United Kingdom

Commander as a naval and air force rank

Australia

Canada

Scandinavia

Denmark

United Kingdom

Royal Navy

Royal Air Force

United States

Gallery

Commander as a military appointment

British Army

Netherlands

New Zealand Army

Spanish Armed Forces and ''Guardia Civil''

United States Army

United States Air Force

United States Space Force

Commander as a non-military rank or title

NASA rank

Use in aviation

British police rank

Australian police rank

American police rank

Canadian police rank

Incident Command System

Chivalric orders

See also

Notes

References