
Military organization (
AE) or military organisation (
BE) is the structuring of the
armed force
A military, also known collectively as armed forces, is a heavily Weapon, armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable ...
s of a
state
State most commonly refers to:
* State (polity), a centralized political organization that regulates law and society within a territory
**Sovereign state, a sovereign polity in international law, commonly referred to as a country
**Nation state, a ...
so as to offer such
military capability
Military capability is defined by the Australian Defence Force as "the ability to achieve a desired effect in a specific operating environment". It is defined by three interdependent factors: combat readiness, sustainable capability and force struc ...
as a
national defense policy may require. Formal military organization tends to use
hierarchical
A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an importan ...
forms (see
Modern hierarchy for terminology and approximate troop strength per hierarchical unit).
In some countries,
paramilitary
A paramilitary is a military that is not a part of a country's official or legitimate armed forces. The Oxford English Dictionary traces the use of the term "paramilitary" as far back as 1934.
Overview
Though a paramilitary is, by definiti ...
forces are included in a nation's armed forces, though not considered military. Armed forces that are not a part of military or paramilitary organizations, such as
insurgent
An insurgency is a violent, armed rebellion by small, lightly armed bands who practice guerrilla warfare against a larger authority. The key descriptive feature of insurgency is its asymmetric nature: small irregular forces face a large, well ...
forces, often emulate military organizations, or use these structures.
History
The use of formalized
ranks in a hierarchical structure came into widespread use with the
Roman Army
The Roman army () served ancient Rome and the Roman people, enduring through the Roman Kingdom (753–509 BC), the Roman Republic (509–27 BC), and the Roman Empire (27 BC–AD 1453), including the Western Roman Empire (collapsed Fall of the W ...
. The Roman Army was organized into
legions, each comprising around 5000 soldiers and led by a
legate. Each legion was further divided into centuries which were led by
centurions.
In modern times, executive control, management and administration of military organization is typically undertaken by governments through a
government department
Ministry or department (also less commonly used secretariat, office, or directorate) are designations used by first-level Executive (government), executive bodies in the Machinery of government, machinery of governments that manage a specific se ...
within the structure of
public administration
Public administration, or public policy and administration refers to "the management of public programs", or the "translation of politics into the reality that citizens see every day",Kettl, Donald and James Fessler. 2009. ''The Politics of the ...
, often known as a
ministry of defence or department of defense. These in turn manage
military branches that themselves command formations and units specialising in combat,
combat support and
combat-service support.
Executive control, management and administration
The usually
civilian or partly civilian executive control over the national military organization is exercised in
democracies
Democracy (from , ''dēmos'' 'people' and ''kratos'' 'rule') is a form of government in which political power is vested in the people or the population of a state. Under a minimalist definition of democracy, rulers are elected through competitiv ...
by an elected political leader as a member of the government's
cabinet, usually known as a
minister of defence
A ministry of defence or defense (see spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and military forces, found in states where the government is divid ...
. In
presidential system
A presidential, strong-president, or single-executive system (sometimes also congressional system) is a form of government in which a head of government (usually titled " president") heads an executive branch that derives its authority and l ...
s, such as the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, the president is the
commander-in-chief, and the cabinet-level defense minister is second in command. Subordinated to that position are often
secretaries
A secretary, administrative assistant, executive assistant, Personal assistant, personal secretary, or other similar titles is an individual whose work consists of supporting management, including executives, using a variety of project manageme ...
for specific major operational divisions of the armed forces as a whole, such as those that provide general support services to the military, including their dependants.
Then there are the heads of specific departmental agencies responsible for the provision and management of specific skill- and knowledge-based services such as
strategic advice,
capability development assessment, or
military science
Military science is the study of military processes, institutions, and behavior, along with the study of warfare, and the theory and application of organized coercive force. It is mainly focused on theory, method, and practice of producing mi ...
provision of research, and design and development of technologies. Within each departmental agency will be found administrative branches responsible for further agency
business specialization work.
Military branches
In most countries, the ''armed forces'' are divided into three
military branch
Military branch (also service branch or armed service) is according to common standard a subdivision of the national armed forces of a sovereign nation or state.
Types of branches
Unified armed forces
The Canadian Armed Forces is the unifie ...
es (also ''service, armed service, or military service''):
army
An army, ground force or land force is an armed force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or country. It may also include aviation assets by ...
,
navy
A navy, naval force, military maritime fleet, war navy, or maritime force is the military branch, branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral z ...
, and
air force
An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
.
Many countries have a variation on the standard model of three basic military branches. Some nations also organize their
cyber force, emergencies service,
medical service,
military logistics
Military logistics is the discipline of planning and carrying out the movement, supply, and maintenance of military forces. In its most comprehensive sense, it is those aspects or military operations that deal with:
* Design, development, Milita ...
,
space force
A space force is a military branch of a nation's armed forces that conducts military operations in outer space and space warfare. The world's first space force was the Russian Space Forces, established in 1992 as an independent military service. ...
,
marines
Marines (or naval infantry) are military personnel generally trained to operate on both land and sea, with a particular focus on amphibious warfare. Historically, the main tasks undertaken by marines have included Raid (military), raiding ashor ...
, and
special forces
Special forces or special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...
such as
commando
A commando is a combatant, or operative of an elite light infantry or special operations force, specially trained for carrying out raids and operating in small teams behind enemy lines.
Originally, "a commando" was a type of combat unit, as oppo ...
s or
airborne forces
Airborne forces are ground combat units carried by aircraft and airdropped into battle zones, typically by parachute drop. Parachute-qualified infantry and support personnel serving in airborne units are also known as paratroopers.
The main ...
as independent armed services. A nation's
border guard
A border guard of a country is a national security agency that ensures border security. Some of the national border guard agencies also perform coast guard (as in Germany, Italy or Ukraine) and rescue service duties.
Name and uniform
In diff ...
or
coast guard
A coast guard or coastguard is a Maritime Security Regimes, maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with cust ...
may also be an independent branch of its military, although in many nations border guard or coast guard is a civil
law enforcement agency
A law enforcement agency (LEA) is any government agency responsible for law enforcement within a specific jurisdiction through the employment and deployment of law enforcement officers and their resources. The most common type of law enforcement ...
. A number of countries have no navy, for geographical reasons such as being
landlocked
A landlocked country is a country that has no territory connected to an ocean or whose coastlines lie solely on endorheic basins. Currently, there are 44 landlocked countries, two of them doubly landlocked (Liechtenstein and Uzbekistan), and t ...
.
In larger armed forces, the cultures between the different branches of the armed forces can be quite different.
Most smaller countries have a single organization that encompasses all armed forces employed by the country in question. Armies of
developing countries
A developing country is a sovereign state with a less-developed Secondary sector of the economy, industrial base and a lower Human Development Index (HDI) relative to developed countries. However, this definition is not universally agreed upon. ...
tend to consist primarily of
infantry
Infantry, or infantryman are a type of soldier who specialize in ground combat, typically fighting dismounted. Historically the term was used to describe foot soldiers, i.e. those who march and fight on foot. In modern usage, the term broadl ...
, while
developed countries
A developed country, or advanced country, is a sovereign state that has a high quality of life, developed economy, and advanced technological infrastructure relative to other less industrialized nations. Most commonly, the criteria for eval ...
armies tend to have larger units manning expensive equipment and only a fraction of personnel in infantry units.
In western militaries, a
joint force is defined as a unit or formation comprising combat power from two or more branches of the military.
Internal security forces
Gendarmerie
A gendarmerie () is a paramilitary or military force with law enforcement duties among the civilian population. The term ''gendarme'' () is derived from the medieval French expression ', which translates to " men-at-arms" (). In France and so ...
s,
military police
Military police (MP) are law enforcement agencies connected with, or part of, the military of a state. Not to be confused with civilian police, who are legally part of the civilian populace. In wartime operations, the military police may supp ...
and
security forces
Security forces are statutory organizations with internal security mandates. In the legal context of several countries, the term has variously denoted police and military units working in concert, or the role of irregular military and paramilitar ...
, including equivalents such as
paramilitary forces
A paramilitary is a military that is not a part of a country's official or legitimate armed forces. The Oxford English Dictionary traces the use of the term "paramilitary" as far back as 1934.
Overview
Though a paramilitary is, by definiti ...
,
militia
A militia ( ) is a military or paramilitary force that comprises civilian members, as opposed to a professional standing army of regular, full-time military personnel. Militias may be raised in times of need to support regular troops or se ...
,
internal troops and
police tactical unit
A police tactical unit (PTU) is a specialized police unit trained and equipped to handle situations that are beyond the capabilities of ordinary law enforcement units because of the level of violence (or risk of violence) involved. The tasks of a ...
, are an
internal security
Internal security is the act of keeping peace within the borders of a sovereign state or other Self-governance, self-governing territories, generally by upholding the national law and defending against internal security threats. This task and rol ...
service common in most of the world, but uncommon in countries with English
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
histories where civil police are employed to enforce the law, and there are tight restrictions on how the armed forces may be used to assist.
Commands, formations, and units
It is common, at least in the European and North American militaries, to refer to the building blocks of a military as
s, s, and s.
In a military context, a command is a collection of units and formations under the control of a single officer, although during
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
a command was also a name given to a
battlegroup in the
United States Army
The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...
. In general, it is an administrative and executive
strategic headquarters that is responsible to the national government or the national military
headquarters
Headquarters (often referred to as HQ) notes the location where most or all of the important functions of an organization are coordinated. The term is used in a wide variety of situations, including private sector corporations, non-profits, mil ...
. It is not uncommon for a nation's services to each consist of their own command (such as Land Component, Air Component, Naval Component, and Medical Component in the
Belgian Army
The Land Component (, ), historically and commonly still referred to as the Belgian Army (, ), is the Land warfare, land branch of the Belgian Armed Forces. The King of the Belgians is the commander in chief. The current chief of staff of the Land ...
), but this does not preclude the existence of commands that are not service-based.
A formation is defined by the
U.S. Department of Defense as "two or more aircraft, ships, or units proceeding together under a commander". Fomin in the ''
Great Soviet Encyclopedia
The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...
'' emphasised its combined-arms nature: "Formations are those military organisations which are formed from different speciality Arms and Services troop units to create a balanced, combined combat force. The formations only differ in their ability to achieve different scales of application of force to achieve different strategic, operational and tactical goals and mission objectives." It is a composite military organization that includes a mixture of integrated and operationally attached sub-units, and is usually combat-capable. Examples of formations include
divisions,
brigade
A brigade is a major tactical military unit, 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 ...
s,
battalion
A battalion is a military unit, typically consisting of up to one thousand soldiers. A battalion is commanded by a lieutenant colonel and subdivided into several Company (military unit), companies, each typically commanded by a Major (rank), ...
s,
wings, etc. Formation may also refer to
tactical formation
In military operation , military-style operations, a tactical formation (or tactical order) is the arrangement or deployment of movable military or policing forces such as Infantry tactics, infantry, cavalry tactics, cavalry, armoured fighting ...
, the physical arrangement or disposition of troops and weapons. Examples of formation in such usage include
pakfront,
panzerkeil,
testudo formation
In ancient Roman warfare, the ''testudo'' or tortoise formation was a type of shield wall formation commonly used by the Roman legions during battles, particularly when they were the attacking force during sieges.
Formation
In the ''testu ...
, etc.
A typical unit is a homogeneous military organization (either combat,
combat-support or non-combat in capability) that includes service personnel predominantly from a single arm of service, or a branch of service, and its administrative and command functions are self-contained. Any unit subordinate to another unit is considered its sub-unit or minor unit. It is not uncommon in the United States for unit and formation to be used synonymously. In
Commonwealth
A commonwealth is a traditional English term for a political community founded for the common good. The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the 15th century. Originally a phrase (the common-wealth ...
practice, formation is not used for smaller organizations such as battalions, which are instead called "units", and their constituent
platoon
A platoon is a Military organization, military unit typically composed of two to four squads, Section (military unit), sections, or patrols. Platoon organization varies depending on the country and the Military branch, branch, but a platoon can ...
s or
companies
A company, abbreviated as co., is a legal entity representing an association of legal people, whether natural, juridical or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specifi ...
are referred to as sub-units. In the Commonwealth, formations are divisions, brigades, etc.
Different
armed forces
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a ...
, and even different branches of service of the armed forces, may use the same name to denote different types of organizations. An example is the "squadron". In most navies a
squadron is a formation of several ships; in most air forces it is a unit; in the U.S. Army it is a battalion-sized
cavalry
Historically, cavalry (from the French word ''cavalerie'', itself derived from ''cheval'' meaning "horse") are groups of soldiers or warriors who Horses in warfare, fight mounted on horseback. Until the 20th century, cavalry were the most mob ...
unit; and in Commonwealth armies a squadron is a company-sized sub-unit.
Table of organization and equipment
A
table of organization and equipment
A table of organization and equipment (TOE or TO&E) is the specified organization, staffing, and equipment of Military unit, military units. Also used in acronyms as 'T/O' and 'T/E'. It also provides information on the mission and capabilities of ...
(TOE or TO&E) is a document published by the U.S. Army Force Management Support Agency that prescribes the organization, manning, and equipage of units from divisional size and down, but also including the headquarters of Corps and Armies.
It also provides information on the mission and capabilities of a unit as well as the unit's current status. A general TOE is applicable to a type of unit (for instance, infantry) rather than a specific unit (the 3rd Infantry Division). In this way, all units of the same branch (such as infantry) follow the same structural guidelines.
Modern hierarchy
Army
The following table gives an overview of some of the terms used to describe army hierarchy in armed forces across the world. Whilst it is recognized that there are differences between armies of different nations, many are modeled on the
British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories and Crown Dependencies.
* British national identity, the characteristics of British people and culture ...
or
American models, or both.
However, many military units and formations go back in history for a long time, and were devised by various military thinkers throughout European history.
For example, the modern ''Corps'' was first introduced in France about 1805 by Napoleon as a more flexible tactical grouping of two or more divisions during the
Napoleonic Wars
{{Infobox military conflict
, conflict = Napoleonic Wars
, partof = the French Revolutionary and Napoleonic Wars
, image = Napoleonic Wars (revision).jpg
, caption = Left to right, top to bottom:Battl ...
.
Rungs may be skipped in this ladder: for example, typically NATO forces skip from battalion to brigade. Likewise, only large military powers may have organizations at the top levels and different armies and countries may also use traditional names, creating considerable confusion: for example, a British or Canadian armored regiment (battalion) is divided into
squadrons (companies) and
troop
A troop is a military sub-subunit, originally a small formation of cavalry, subordinate to a squadron. In many armies a troop is the equivalent element to the infantry section or platoon. Exceptions are the US Cavalry and the King's Troo ...
s (platoons), whereas an American cavalry squadron (battalion) is divided into troops (companies) and platoons. In the French system (used by many African countries) the company is divided into sections (platoons) composed of 3 x "groupes de combat" of 7 soldiers, plus a group of vehicle crews and a HQ that includes 2 x snipers.
Army
An army, ground force or land force is an armed force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or country. It may also include aviation assets by ...
,
army group
An army group is a military organization consisting of several field army, field armies, which is self-sufficient for indefinite periods. It is usually responsible for a particular geographic area. An army group is the largest field organizatio ...
,
region
In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and ...
, and
theatre
Theatre or theater is a collaborative form of performing art that uses live performers, usually actors to present experiences of a real or imagined event before a live audience in a specific place, often a Stage (theatre), stage. The performe ...
are all large formations that vary significantly between armed forces in size and hierarchy position. While
divisions were the traditional level at which support elements (field artillery, hospital, logistics and maintenance, etc.) were added to the unit structure, since World War II, many brigades now have such support units, and since the 1980s, regiments also have been receiving support elements. A regiment with such support elements is called a
regimental combat team in US military parlance, or a
battlegroup in the UK and other forces. Canadian Army doctrine also includes the
combat team which is a company of infantry augmented with tanks, or a squadron of tanks augmented with infantry, or the combination of a full company of infantry with a full squadron of tanks.
During
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
the
Red Army
The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...
used the same basic organizational structure. However, in the beginning many units were greatly underpowered and their size was actually one level below on the ladder that is usually used elsewhere; for example, a division in the early-WWII Red Army would have been about the size of most nations' regiments or brigades.
At the top of the ladder, what other nations would call an army group, the Red Army called a
front. By contrast, during the same period the German
Wehrmacht
The ''Wehrmacht'' (, ) were the unified armed forces of Nazi Germany from 1935 to 1945. It consisted of the German Army (1935–1945), ''Heer'' (army), the ''Kriegsmarine'' (navy) and the ''Luftwaffe'' (air force). The designation "''Wehrmac ...
army groups, particularly on the
Eastern Front, such as
Army Group Centre
Army Group Centre () was the name of two distinct strategic German Army Groups that fought on the Eastern Front in World War II. The first Army Group Centre was created during the planning of Operation Barbarossa, Germany's invasion of the So ...
significantly exceeded the above numbers, and were more cognate with the Soviet
Strategic Directions.
Navy
Naval organization at the
flotilla
A flotilla (from Spanish, meaning a small ''flota'' ( fleet) of ships), or naval flotilla, is a formation of small warships that may be part of a larger fleet.
Composition
A flotilla is usually composed of a homogeneous group of the same cla ...
level and higher is less commonly abided by, as ships operate in smaller or larger groups in various situations that may change at a moment's notice. However, there is some common terminology used throughout navies to communicate the general concept of how many vessels might be in a unit.
Navies are generally organized into groups for a specific purpose, usually strategic, and these organizational groupings appear and disappear frequently based on the conditions and demands placed upon a navy. This contrasts with army organization where units remain static, with the same men and equipment, over long periods of time.
The five-star ranks of
admiral of the fleet
An admiral of the fleet or shortened to fleet admiral is a senior naval flag officer rank, usually equivalent to field marshal and marshal of the air force. An admiral of the fleet is typically senior to an admiral.
It is also a generic ter ...
and fleet admiral have largely been out of regular use since the 1990s, with the exception of ceremonial or honorary appointments. Currently, all major navies (
blue-water and
green-water navies) are commanded by an
admiral
Admiral is one of the highest ranks in many navies. In the Commonwealth nations and the United States, a "full" admiral is equivalent to a "full" general in the army or the air force. Admiral is ranked above vice admiral and below admiral of ...
of either four-star rank or three-star rank depending on relative size. Smaller naval forces, such as the
Royal New Zealand Navy
The Royal New Zealand Navy (RNZN; ) is the maritime arm of the New Zealand Defence Force. The fleet currently consists of eight ships. The Navy had its origins in the Naval Defence Act 1913, and the subsequent acquisition of the cruiser , whi ...
, or those navies that are effectively
coast guard
A coast guard or coastguard is a Maritime Security Regimes, maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with cust ...
s, are commanded by a
rear-admiral
Rear admiral is a flag officer rank used by English-speaking navies. In most European navies, the equivalent rank is called counter admiral.
Rear admiral is usually immediately senior to commodore and immediately below vice admiral. It is ...
(two-star rank),
commodore (one-star rank) or even a
captain
Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader or highest rank officer of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police depa ...
.
Aircraft carrier
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the ...
s are typically commanded by a captain.
Submarine
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or infor ...
s and
destroyer
In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort
larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
s are typically commanded by a captain or commander. Some destroyers, particularly smaller destroyers such as
frigate
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied.
The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuvera ...
s (formerly known as
destroyer escort
Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships.
Development of the destroyer escort was promoted by th ...
s) are usually commanded by officers with the rank of commander.
Corvette
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the sloo ...
s, the smallest class of warship, are commanded by officers with the rank of commander or
lieutenant-commander. Auxiliary ships, including
gunboat
A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.
History Pre-steam ...
s,
minesweepers
A minesweeper is a small warship designed to remove or detonate naval mines. Using various mechanisms intended to counter the threat posed by naval mines, minesweepers keep waterways clear for safe shipping.
History
The earliest known usage of ...
,
patrol boat
A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval ship, naval vessel generally designed for Coastal defence and fortification, coastal defence, Border control, border security, or law ...
s, military
riverine craft,
tenders and
torpedo boat
A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs were steam-powered craft dedicated to ramming enemy ships with explosive spar torpedoes. Later evolutions launched variants of ...
s are usually commanded by
lieutenant
A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a Junior officer, junior commissioned officer rank in the armed forces of many nations, as well as fire services, emergency medical services, Security agency, security services ...
s,
sub-lieutenants or
warrant officers
Warrant officer (WO) is a Military rank, rank or category of ranks in the armed forces of many countries. Depending on the country, service, or historical context, warrant officers are sometimes classified as the most junior of the commissioned ...
. Usually, the smaller the vessel, the lower the rank of the ship's commander. For example,
patrol boat
A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval ship, naval vessel generally designed for Coastal defence and fortification, coastal defence, Border control, border security, or law ...
s are often commanded by
ensign
Ensign most often refers to:
* Ensign (flag), a flag flown on a vessel to indicate nationality
* Ensign (rank), a navy (and former army) officer rank
Ensign or The Ensign may also refer to:
Places
* Ensign, Alberta, Alberta, Canada
* Ensign, Ka ...
s, while frigates are rarely commanded by an officer below the rank of commander.
Historically, navies were far more rigid in structure. Ships were collected in
divisions
Division may refer to:
Mathematics
*Division (mathematics), the inverse of multiplication
* Division algorithm, a method for computing the result of mathematical division Military
*Division (military), a formation typically consisting of 10,000 t ...
, which in turn were collected in numbered
squadrons, which comprised a numbered
fleet. Permission for a vessel to leave one unit and join another would have to be approved on paper.
The modern U.S. Navy is primarily based on a number of standard groupings of vessels, including the
carrier strike group
A carrier strike group (CSG) is a type of carrier battle group of the United States Navy. It is an operational formation composed of roughly 7,500 personnel, usually an aircraft carrier, at least one cruiser, a destroyer Squadron (naval), squad ...
and the
expeditionary strike group.
Additionally, naval organization continues aboard a single ship. The complement forms three or four departments (such as tactical and engineering), each of which has a number of divisions, followed by work centers.
Air force
The organizational structures of air forces vary between nations: some air forces (such as the
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
and the
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
) are divided into commands, groups and squadrons; others (such as the
Soviet Air Force
The Soviet Air Forces (, VVS SSSR; literally "Military Air Forces of the Union of Soviet Socialist Republics"; initialism VVS, sometimes referred to as the "Red Air Force") were one of the air forces of the Soviet Union. The other was the Sovie ...
) have an Army-style organizational structure. The modern
Royal Canadian Air Force
The Royal Canadian Air Force (RCAF; ) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environmental commands within the unified Can ...
uses
Air division as the formation between wings and the entire air command. Like the RAF, Canadian wings consist of squadrons.
Task force
A
task force
A task force (TF) is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology. Many ...
is a unit or formation created as a temporary grouping for a specific operational purpose. Aside from administrative hierarchical forms of organization that have evolved since the early 17th century in Europe, fighting forces have been grouped for specific operational purposes into mission-related organizations such as the German
Kampfgruppe
In military history, the German term (pl. ; abbrev. KG, or KGr in usage during World War II, literally "fighting group" or " battlegroup") can refer to a combat formation of any kind, but most usually to that employed by the of Nazi Germa ...
or the U.S. Combat Team (Army) and Task Force (Navy) during the Second World War, or the Soviet
Operational manoeuvre group during the Cold War. In the British and Commonwealth armies the
battlegroup became the usual grouping of companies during the
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
and the Cold War.
Within NATO, a
Joint Task Force (JTF) would be such a temporary grouping that includes elements from more than one armed service, a Combined Task Force (CTF) would be such a temporary grouping that includes elements from more than one nation, and a Combined Joint Task Force (CJTF) would be such a temporary grouping that includes elements of more than one armed service and more than one nation.
See also
*
Command and control
*
Military administration
Military administration identifies both the techniques and systems used by military departments, agencies, and armed services involved in managing the armed forces. It describes the processes that take place within military organisations outs ...
Explanatory notes
References
{{Military and war
Organization
An organization or organisation (English in the Commonwealth of Nations, Commonwealth English; American and British English spelling differences#-ise, -ize (-isation, -ization), see spelling differences) is an legal entity, entity—such as ...