94-435: Second Allied Tactical Air Force (2 ATAF) was a NATO military formation under Allied Air Forces Central Europe tasked with providing air support to NATO's Northern Army Group (NORTHAG). 2 ATAF commanded all flying units based within its sector and all reinforcements flying into its sector, as well as ground-based radar systems and stations, air defense units and the airfields in its sector. Second Allied Tactical Air Force
188-699: 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. Roman Army The Roman army ( Latin : exercitus Romanus ) was the armed forces deployed by the Romans throughout the duration of Ancient Rome , from the Roman Kingdom (753 BC–509 BC) to the Roman Republic (509 BC–27 BC) and the Roman Empire (27 BC–476 AD), and its medieval continuation,
282-500: 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 , brigades , battalions , wings , etc. Formation may also refer to tactical formation ,
376-563: A cavalry contingent attached). Around 80 AD, a minority of auxiliary regiments were doubled in size. Until about 68 AD, the auxilia were recruited by a mix of conscription and voluntary enlistment. After that time, the auxilia became largely a volunteer corps, with conscription resorted to only in emergencies. Auxiliaries were required to serve a minimum of 25 years, although many served for longer periods. On completion of their minimum term, auxiliaries were awarded Roman citizenship, which carried important legal, fiscal and social advantages. Alongside
470-592: A command is a collection of units and formations under the control of a single officer, although during World War II a command was also a name given to a battlegroup in the United States Army . In general, it is an administrative and executive strategic headquarters that is responsible to the national government or the national military headquarters . 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
564-868: A core of units which were both professional and disciplined. It contained formidable guards units such as the Varangians , the Athanatoi , a unit of heavy cavalry stationed in Constantinople , the Vardariotai and the Archontopouloi , recruited by Alexios from the sons of dead Byzantine officers, foreign mercenary regiments, and also units of professional soldiers recruited from the provinces. These provincial troops included kataphraktoi cavalry from Macedonia, Thessaly and Thrace, and various other provincial forces such as Trebizond archers from
658-424: A fraction of personnel in infantry units. In western militaries, a joint force is defined as a unit or formation comprising representation of combat power from two or more branches of the military. Gendarmeries , military police and security forces , including equivalents such as paramilitary forces , militia , internal troops and police tactical unit , are an internal security service common in most of
752-610: 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 . OF 8: Lieutenant General OR-2: private first class 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
846-485: A member of the government's cabinet , usually known as a minister of defence . In presidential systems , such as the United States , the president is the commander-in-chief , and the cabinet-level defense minister is second in command. Subordinated to that position are often secretaries for specific major operational divisions of the armed forces as a whole, such as those that provide general support services to
940-417: A mixed conscript and volunteer corps serving an average of 10 years, to all-volunteer units of long-term professionals serving a standard 25-year term (conscription was only decreed in emergencies). In the later 1st century, the size of a legion's First Cohort was doubled, increasing legionary personnel to c. 5,500. Alongside the legions, Augustus established the auxilia , a regular corps of similar numbers to
1034-465: A non-citizen formation of roughly equal size, the ala , recruited from Rome's Italian allies, or socii . The latter were approximately 150 autonomous states which were bound by a treaty of perpetual military alliance with Rome. Their sole obligation was to supply to the Roman army, on demand, a number of fully equipped troops up to a specified maximum each year. The Second Punic War (218–201 BC) saw
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#17327877688471128-482: A part of military or paramilitary organizations, such as insurgent forces, often emulate military organizations, or use these structures. The use of formalized ranks in a hierarchical structure came into widespread use with the Roman Army . In modern times, executive control, management and administration of military organization is typically undertaken by governments through a government department within
1222-444: A provincial governor's police force. As a large, disciplined and skilled force of fit men, they played a crucial role in the construction of a province's Roman military and civil infrastructure: in addition to constructing forts and fortified defences such as Hadrian's Wall , they built roads, bridges, ports, public buildings, entire new cities (Roman colonies), and also engaged in large-scale forest clearance and marsh drainage to expand
1316-523: A single, large mass (the phalanx ) as in the Early Roman army , the Romans now drew up in three lines consisting of small units (maniples) of 120 men, arrayed in chessboard fashion, giving much greater tactical strength and flexibility. This structure was probably introduced in c. 300 BC during the Samnite Wars . Also probably dating from this period was the regular accompaniment of each legion by
1410-491: 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 the Red Army 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
1504-703: 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 or the U.S. Combat Team (Army) and Task Force (Navy) during the Second World War, or the Soviet Operational manoeuvre group during
1598-481: A united force in periods of serious external threat. Around 550 BC, during the period conventionally known as the rule of king Servius Tullius , it appears that a universal levy of eligible adult male citizens was instituted. This development apparently coincided with the introduction of heavy armour for most of the infantry. Although originally low in numbers, the Roman infantry was extremely effective and developed some influential battle strategies. The early Roman army
1692-507: Is a civil law enforcement agency . A number of countries have no navy, for geographical reasons. 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 tend to consist primarily of infantry , while developed countries armies tend to have larger units manning expensive equipment and only
1786-593: 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 practice, formation is not used for smaller organizations such as battalions, which are instead called "units", and their constituent platoons or companies are referred to as sub-units. In the Commonwealth, formations are divisions, brigades, etc. Different armed forces , and even different branches of service of
1880-450: 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 , army group , region , and theatre 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
1974-450: Is primarily based on a number of standard groupings of vessels, including the carrier strike group 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. The organizational structures of air forces vary between nations: some air forces (such as
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#17327877688472068-439: Is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. Formal military organization tends to use hierarchical forms (see Modern hierarchy for terminology and approximate troop strength per hierarchical unit). In some countries, paramilitary forces are included in a nation's armed forces, though not considered military. Armed forces that are not
2162-412: The primus pilus , was elevated to equestrian rank upon completion of his single-year term of office. The senior officers of the army, the legati legionis (legion commanders), tribuni militum (legion staff officers) and the praefecti (commanders of auxiliary regiments) were all of at least equestrian rank. In the 1st and early 2nd centuries, they were mainly Italian aristocrats performing
2256-872: The Belgian Air Force , the Royal Netherlands Air Force , two divisions of the German Air Force ( Luftwaffe ) and one US Air Force Tactical Fighter Group, as well as extensive air defense and radar installations provided by Germany, Belgium and the Netherlands. If needed, 2 ATAF would have been reinforced with units from the US Third (UK based), Eighth (reconnaissance and bombing), Ninth (immediate reinforcements) and Twelfth Air Force (follow on reinforcements), and with French Air Force and Royal Air Force units. At
2350-590: The Belgian Army ), 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 emphasised its combined-arms nature: "Formations are those military organisations which are formed from different speciality Arms and Services troop units to create
2444-483: The Eastern Roman Empire . It is thus a term that may span approximately 2,206 years (753 BC–1453 AD), during which the Roman armed forces underwent numerous permutations in size , composition, organisation, equipment and tactics, while conserving a core of lasting traditions. Until c. 550 BC , there was no "national" Roman army, but a series of clan-based war-bands which only coalesced into
2538-545: The Royal New Zealand Navy , or those navies that are effectively coast guards , are commanded by a rear-admiral (two-star rank), commodore (one-star rank) or even a captain . Aircraft carriers are typically commanded by a captain. Submarines and destroyers are typically commanded by a captain or commander. Some destroyers, particularly smaller destroyers such as frigates (formerly known as destroyer escorts ) are usually commanded by officers with
2632-665: The United States Air Force and the Royal Air Force ) are divided into commands, groups and squadrons; others (such as the Soviet Air Force ) have an Army-style organizational structure. The modern Royal Canadian Air Force uses Air division as the formation between wings and the entire air command. Like the RAF, Canadian wings consist of squadrons. A task force is a unit or formation created as
2726-614: The armed forces are divided into three military branches (also service, armed service, or military service ): army , navy , and air force . 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 , space force , marines , and special forces such as commandos or airborne forces as independent armed services. A nation's border guard or coast guard may also be an independent branch of its military, although in many nations border guard or coast guard
2820-469: The flotilla 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
2914-610: The Black Sea coast of Anatolia . Alongside troops raised and paid for directly by the state the Komnenian army included the armed followers of members of the wider imperial family and its extensive connections. In this can be seen the beginnings of the feudalisation of the Byzantine military. The granting of pronoia holdings, where land, or more accurately rights to revenue from land, was held in return for military obligations,
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3008-636: The Cold War. In the British and Commonwealth armies the battlegroup became the usual grouping of companies during the Second World War 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
3102-592: The East Roman army. The army of the Principate underwent a significant transformation, as a result of the chaotic 3rd century . Unlike the Principate army, the army of the 4th century was heavily dependent on conscription and its soldiers were more poorly remunerated than in the 2nd century. Barbarians from outside the empire probably supplied a much larger proportion of the late army's recruits than in
3196-630: The Empire's definitive division into Eastern and Western halves in 395. A few decades afterwards, the Western army disintegrated as the Western Empire collapsed. The East Roman army , on the other hand, continued intact and essentially unchanged until its reorganization by themes and transformation into the Byzantine army in the 7th century. The term late Roman army is often used to include
3290-484: The Principate peak of c. 440,000. The main change in structure was the establishment of large armies that accompanied the emperors ( comitatus praesentales ) and were generally based away from the frontiers. Their primary function was to deter usurpations . The legions were split up into smaller units comparable in size to the auxiliary regiments of the Principate. In parallel, legionary armour and equipment were abandoned in favour of auxiliary equipment. Infantry adopted
3384-513: The Roman knightly order) were eligible to serve as senior officers. Iuniores of the highest social classes ( equites and the First Class of commoners) provided the legion's cavalry, the other classes the legionary infantry. The proletarii (those assessed at under 400 drachmae wealth) were ineligible for legionary service and were assigned to the fleets as oarsmen. Elders, vagrants, freedmen, slaves and convicts were excluded from
3478-539: The Romans would fight in their basic tactical unit, the centuria of 100 men. In addition, separate clan-based forces remained in existence until c. 450 BC at least, although they would operate under the Praetors' authority, at least nominally. In 493 BC, shortly after the establishment of the Roman Republic , Rome concluded a perpetual treaty of military alliance (the Foedus Cassianum ), with
3572-470: The Second Punic War had been excluded from service in the legions by the minimum property requirement: during that war, extreme manpower needs had forced the army to ignore the requirement, and this practice continued thereafter. Maniples were gradually phased out as the main tactical unit, and replaced by the larger cohorts used in the allied alae , a process probably complete by the time
3666-463: 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
3760-456: The accession of a new emperor. In addition, on completion of their term of service, they were given a generous discharge bonus equivalent to 13 years' salary. Auxiliaries were paid much less in the early 1st century, but by 100 AD, the differential had virtually disappeared. Similarly, in the earlier period, auxiliaries appear not to have received cash and discharge bonuses, but probably did so from Hadrian onwards. Junior officers ( principales ),
3854-617: The addition of a third element to the existing dual Roman/Italian structure: non-Italian mercenaries with specialist skills lacking in the legions and alae : Numidian light cavalry , Cretan archers , and Balearic slingers . From this time, these units always accompanied Roman armies. The Republican army of this period, like its earlier forebear, did not maintain standing or professional military forces, but levied them, by compulsory conscription, as required for each campaigning season and disbanded thereafter (although formations could be kept in being over winter during major wars). The standard levy
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3948-418: 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 unit; and in Commonwealth armies a squadron is a company-sized sub-unit. A table of organization and equipment (TOE or TO&E) is a document published by
4042-583: The army of the 1st and 2nd centuries. The size of the 4th-century army is controversial. More dated scholars (e.g. A. H. M. Jones , writing in the 1960s) estimated the late army as much larger than the Principate army, half the size again or even as much as twice the size. With the benefit of archaeological discoveries of recent decades, many contemporary historians view the late army as no larger than its predecessor: under Diocletian c. 390,000 (the same as under Hadrian almost two centuries earlier) and under Constantine no greater, and probably somewhat smaller, than
4136-576: The army, the Empire required the use of large numbers of mercenaries. After Andronikos II took to the throne, the army fell apart and the Byzantines suffered regular defeats at the hands of their eastern opponents, although they would continue to enjoy success against the crusader territories in Greece. By c. 1350, following a destructive civil war and the outbreak of the Black Death , the Empire
4230-402: The auxilia. This was reflected in better pay and benefits. In addition, legionaries were equipped with more expensive and protective armour than auxiliaries. However, in 212, the emperor Caracalla granted Roman citizenship to all the empire's inhabitants. At this point, the distinction between legions and auxilia became moot, the latter becoming all-citizen units also. The change was reflected in
4324-489: The beginning of the Komnenian period, the Byzantine army was reduced to a shadow of its former self: during the 11th century, decades of peace and neglect had reduced the old thematic forces, and the Battle of Manzikert in 1071 had destroyed the professional tagmata , the core of the Byzantine army. At Manzikert and later at Dyrrhachium , units tracing their lineage for centuries back to Late Roman army were wiped out, and
4418-408: The borders, in roughly 17 of the 42 provinces of the empire in the reign of Hadrian (r. 117–138). The military chain of command was relatively uniform across the Empire. In each province, the deployed legions' legati (legion commanders, who also controlled the auxiliary regiments attached to their legion) reported to the legatus Augusti pro praetore (provincial governor), who also headed
4512-596: The capital of the Byzantine Empire, from the surrounding land. The last decisive battle was fought by the Palaiologan army in 1453, when Constantinople was besieged and fell on 29 May. The last isolated remnants of the Byzantine state were conquered by 1461. This article contains the summaries of the detailed linked articles on the historical phases above, Readers seeking discussion of the Roman army by theme, rather than by chronological phase, should consult
4606-405: The character of the army necessarily changed from a temporary force based entirely on short-term conscription to a standing army in which the conscripts, whose service was in this period limited by law to six consecutive years, were complemented by large numbers of volunteers who were willing to serve for much longer periods. Many of the volunteers were drawn from the poorest social class, which until
4700-644: The civil administration. The governor in turn reported directly to the emperor in Rome. There was no army general staff in Rome, but the leading praefectus praetorio (commander of the Praetorian Guard ) often acted as the emperor's de facto military chief-of-staff. Legionary rankers were relatively well-paid, compared to contemporary common labourers. Compared with their subsistence-level peasant families, they enjoyed considerable disposable income, enhanced by periodic cash bonuses on special occasions such as
4794-601: The combined other Latin city-states. The treaty, probably motivated by the need for the Latins to deploy a united defence against incursions by neighbouring hill-tribes, provided for each party to provide an equal force for campaigns under unified command. It remained in force until 358 BC. The central feature of the Roman army of the mid-Republic , or the Polybian army, was the manipular organization of its battle-line. Instead of
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#17327877688474888-551: 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 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 of either four-star rank or three-star rank depending on relative size. Smaller naval forces, such as
4982-493: The disappearance, during the 3rd century, of legionaries' special equipment, and the progressive break-up of legions into cohort-sized units like the auxilia. By the end of Augustus' reign, the imperial army numbered some 250,000 men, equally split between legionaries and auxiliaries (25 legions and c. 250 auxiliary regiments). The numbers grew to a peak of about 450,000 by 211 (33 legions and c. 400 auxiliary regiments). By then, auxiliaries outnumbered legionaries substantially. From
5076-456: The early Principate. Many elements of the late army's defence posture were similar to those associated with forward defence, such as a looser forward location of forts, frequent cross-border operations, and external buffer-zones of allied barbarian tribes. Whatever the defence strategy, it was apparently less successful in preventing barbarian incursions than in the 1st and 2nd centuries. This may have been due to heavier barbarian pressure, and/or to
5170-432: The equivalent of non-commissioned officers in modern armies, could expect to earn up to twice basic pay. Legionary centurions , the equivalent of mid-level commissioned officers, were organised in an elaborate hierarchy. Usually risen from the ranks, they commanded the legion's tactical sub-units of centuriae (c. 80 men) and cohorts (c. 480 men). They were paid several multiples of basic pay. The most senior centurion,
5264-646: The field army numbered around 20,000 men which was increased to about 30,000 men in John II's reign. By the end of Manuel I's reign the Byzantine field army had risen to 40,000 men. The Palaiologan army refers to the military forces of the Byzantine Empire from the late 13th century to its final collapse in the mid 15th century, under the House of the Palaiologoi . The army was a direct continuation of
5358-460: The forces of the Nicaean army, which itself was a fractured component of the formidable Komnenian army . Under the first Palaiologan emperor, Michael VIII, the army's role took an increasingly offensive role whilst the naval forces of the Empire, weakened since the days of Andronikos I Komnenos, were boosted to include thousands of skilled sailors and some 80 ships. Due to the lack of land to support
5452-424: The general Marius assumed command in 107 BC. (The so-called " Marian reforms " of the army hypothesised by some scholars are today seen by other scholars as having evolved earlier and more gradually.) In the period after the defeat of Carthage in 201 BC, the army was campaigning exclusively outside Italy, resulting in its men being away from their home plots of land for many years at a stretch. They were assuaged by
5546-429: The infantry retained its traditional reputation for excellence. The 3rd and 4th centuries saw the upgrading of many existing border forts to make them more defensible, as well as the construction of new forts with much higher defensive specifications. The interpretation of this trend has fuelled an ongoing debate whether the army adopted a defence-in-depth strategy or continued the same posture of "forward defence" as in
5640-455: The kings were replaced by two annually elected praetores in c. 500 BC, the standard levy remained of the same size, but was now divided equally between the praetors, each commanding one legion of 4,500 men. It is likely that the hoplite element was deployed in a Greek-style phalanx formation in large set-piece battles . However, these were relatively rare, with most fighting consisting of small-scale border-raids and skirmishing. In these,
5734-482: The large amounts of booty that they shared after victories in the rich eastern theatre. But in Italy, the ever-increasing concentration of public lands in the hands of big landowners, and the consequent displacement of the soldiers' families, led to great unrest and demands for land redistribution. This was successfully achieved, but resulted in the disaffection of Rome's Italian allies, who as non-citizens were excluded from
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#17327877688475828-530: The legions, recruited from the peregrini (non-citizen inhabitants of the empire – about 90% of the empire's population in the 1st century). As well as comprising large numbers of extra heavy infantry equipped in a similar manner to legionaries, the auxilia provided virtually all the army's cavalry (heavy and light), light infantry, archers and other specialists . The auxilia were organised in c. 500-strong units called cohortes (all-infantry), alae (all-cavalry) and cohortes equitatae (infantry with
5922-399: The military component of their cursus honorum (conventional career path). Later, provincial career officers became predominant. Senior officers were paid very high salaries, multiples of at least 50 times basic. A typical Roman army during this period consisted of five to six legions. One legion was made up of ten cohorts. The first cohort had five centuria each of 160 soldiers. In
6016-431: The military levy, save in emergencies. The legionary cavalry also changed, probably around 300 BC onwards from the light, unarmoured horse of the early army to a heavy force with metal armour (bronze cuirasses and, later, chain-mail shirts). Contrary to a long-held view, the cavalry of the mid-Republic was a highly effective force that generally prevailed against strong enemy cavalry forces (both Gallic and Greek) until it
6110-503: 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 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. In most countries,
6204-484: The more protective equipment of the Principate cavalry. The role of cavalry in the late army does not appear to have been enhanced as compared with the army of the Principate. The evidence is that cavalry was much the same proportion of overall army numbers as in the 2nd century and that its tactical role and prestige remained similar. Indeed, the cavalry acquired a reputation for incompetence and cowardice for their role in three major battles in mid-4th century. In contrast,
6298-458: The nucleus of the army, with the addition of the armed retainers of Alexios' relatives and the nobles enrolled in the army and the substantial aid of a large force of allied Cumans , which won the Battle of Levounion against the Pechenegs (Petcheneks or Patzinaks). Yet, through a combination of skill, determination and years of campaigning, Alexios, John and Manuel Komnenos managed to restore
6392-547: The peak, numbers probably underwent a steep decline by 270 due to plague and losses during multiple major barbarian invasions. Numbers were restored to their early 2nd-century level of c. 400,000 (but probably not to their 211 peak) under Diocletian (r. 284–305). After the empire's borders became settled (on the Rhine - Danube line in Europe) by 68, virtually all military units (except the Praetorian Guard ) were stationed on or near
6486-479: The physical arrangement or disposition of troops and weapons. Examples of formation in such usage include pakfront , panzerkeil , testudo formation , 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
6580-429: The power of the Byzantine Empire by constructing a new army from scratch. This process should not, however, at least in its earlier phases, be seen as a planned exercise in military restructuring. In particular, Alexios I was often reduced to reacting to events rather than controlling them; the changes he made to the Byzantine army were largely done out of immediate necessity and were pragmatic in nature. The new force had
6674-490: The practice of keeping large armies of the best troops in the interior, depriving the border forces of sufficient support. The Komnenian period marked a rebirth of the Byzantine army . At the beginning of the Komnenian period in 1081, the Byzantine Empire had been reduced to the smallest territorial extent. Surrounded by enemies, and financially ruined by a long period of civil war, the empire's prospects looked grim. At
6768-482: The province's available arable land. Soldiers, mostly drawn from polytheistic societies, enjoyed wide freedom of worship in the polytheistic Roman system. They revered their own native deities, Roman deities and the local deities of the provinces in which they served. Only a few religions were banned by the Roman authorities, as being incompatible with the official Roman religion and/or politically subversive, notably Druidism and Christianity . The later Principate saw
6862-399: The rank of commander. Corvettes , the smallest class of warship, are commanded by officers with the rank of commander or lieutenant-commander . Auxiliary ships, including gunboats , minesweepers , patrol boats , military riverine craft , tenders and torpedo boats are usually commanded by lieutenants , sub-lieutenants or warrant officers . Usually, the smaller the vessel, the lower
6956-479: The rank of the ship's commander. For example, patrol boats are often commanded by ensigns , 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 , 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
7050-540: The redistribution. This led to the mass revolt of the socii and the Social War (91-88 BC). The result was the grant of Roman citizenship to all Italians and the end of the Polybian army's dual structure: the alae were abolished and the socii recruited into the legions. Under the founder–emperor Augustus (ruled 30 BC – 14 AD), the legions , c. 5,000-strong all-heavy infantry formations recruited from Roman citizens only, were transformed from
7144-487: The regular forces, the army of the Principate employed allied native units (called numeri ) from outside the empire on a mercenary basis. These were led by their own aristocrats and equipped in traditional fashion. Numbers fluctuated according to circumstances and are largely unknown. As all-citizen formations, and symbolic guarantors of the dominance of the Italian hegemony, legions enjoyed greater social prestige than
7238-495: The rise in popularity among the military of Eastern mystery cults , generally centred on one deity, and involving secret rituals divulged only to initiates. By far the most popular in the army was Mithraism , an apparently syncretist religion which mainly originated in Asia Minor . The Late Roman army is the term used to denote the military forces of the Roman Empire from the accession of emperor Diocletian in 284 until
7332-475: The same branch (such as infantry) follow the same structural guidelines. 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 or American models, or both. However, many military units and formations go back in history for
7426-411: The second through tenth cohorts there were six centuria of 80 men each. These do not include archers, cavalry or officers. Soldiers spent only a fraction of their lives on campaign. Most of their time was spent on routine military duties such as training, patrolling, and maintenance of equipment, etc. Soldiers also played an important role outside the military sphere. They performed the function of
7520-683: 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 army groups, particularly on the Eastern Front , such as Army Group Centre significantly exceeded the above numbers, and were more cognate with the Soviet Strategic Directions . Naval organization at
7614-556: The start of hostilities, 2 ATAF would have had immediately around 700 combat planes at its disposal. The following units would have come under 2 ATAF in wartime: 2 ATAF was disbanded on 30 June 1993, its duties were taken over by Allied Air Forces Central Europe . Note 1: Royal Air Force unit with nuclear strike role with 18x WE.177 tactical nuclear weapons . Note 2: Nuclear sharing unit capable of delivering B61 tactical nuclear weapons . Military formation Military organization ( AE ) or military organisation ( BE )
7708-430: The structure of public administration , 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 . The usually civilian or partly civilian executive control over the national military organization is exercised in democracies by an elected political leader as
7802-576: The subsequent loss of Asia Minor deprived the Empire of its main recruiting ground. In the Balkans, at the same time, the Empire was exposed to invasions by the Norman Kingdom of Sicily , and by Pecheneg raids across the Danube . The Byzantine army's nadir was reached in 1091, when Alexios I Komnenos could manage to field only 500 soldiers from the Empire's professional forces. These formed
7896-460: 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 troops (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
7990-511: 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
8084-486: The western Mediterranean Sea (264–201 BC); and (3) the struggle against the Hellenistic monarchies for control of the eastern Mediterranean (201–91 BC). During the earlier phase, the normal size of the levy (including allies) was in the region of 40,000 men (two consular armies of c. 20,000 men each). During the latter phase, with lengthy wars of conquest followed by permanent military occupation of overseas provinces,
8178-463: The world, but uncommon in countries with English common law 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. It is common, at least in the European and North American militaries, to refer to the building blocks of a military as command s , formation s , and unit s . In a military context,
8272-493: Was at RAF Rheindahlen (Mönchengladbach), the command center in the case of war for 2 ATAF. NORTHAG was in the Netherlands at Joint Operations Center Maastricht (JOC Maastricht). In 1983 NATO began with the construction of Static War Headquarters Castlegate in Linnich , Germany, as a replacement for JOC Maastricht. An Alternate War HQ was located at Kanne ( Belgium ) north of Fort Eben-Emael . 2 ATAF commanded RAF Germany,
8366-537: Was based on a compulsory levy from adult male citizens which was held at the start of each campaigning season, in those years that war was declared. There were no standing or professional forces. During the Regal Era (to c. 500 BC), the standard levy was probably of 9,000 men, consisting of 6,000 heavily armed infantry (probably Greek-style hoplites ), plus 2,400 light-armed infantry ( rorarii , later called velites ) and 600 light cavalry ( equites celeres ). When
8460-402: Was beginning to become a notable element in the military infrastructure towards the end of the Komnenian period, though it became much more important subsequently. In 1097, the Byzantine army numbered around 70,000 men altogether. By 1180 and the death of Manuel Komnenos, whose frequent campaigns had been on a grand scale, the army was probably considerably larger. During the reign of Alexios I,
8554-558: Was decisively beaten by the Carthaginian general Hannibal 's horsemen during the Second Punic War. This was due to Hannibal's greater operational flexibility owing to his Numidian light cavalry. The Polybian army's operations during its existence can be divided into three broad phases. (1) The struggle for hegemony over Italy, especially against the Samnite League (338–264 BC); (2) the struggle with Carthage for hegemony in
8648-483: Was doubled during the Samnite Wars to four legions (two per consul), for a total of c. 18,000 Roman troops and four allied alae of similar size. Service in the legions was limited to property-owning Roman citizens, normally those known as iuniores (age 16–46). The army's senior officers, including its commanders-in-chief, the Roman consuls, were all elected annually at the People's Assembly. Only equites (members of
8742-796: Was formed in 1958. Its area of responsibility covered the Netherlands, Belgium, and Germany north of the city of Kassel and south of the Elbe river. The commander of 2 ATAF was the commanding Air Chief Marshal of the British RAF Second Tactical Air Force , which was renamed RAF Germany on 1 January 1959. A Communication Squadron for 2 ATAF was established in February 1952, and disestablished in January 1959 at RAF Wildenrath , by being redesignated RAF Germany Communication Squadron. The peacetime headquarters of 2 ATAF
8836-479: Was no longer capable of raising troops and the supplies to maintain them. The Empire came to rely upon troops provided by Serbs, Bulgarians, Venetians, Latins, Genoans and Ottoman Turks to fight the civil wars that lasted for the greater part of the 14th century, with the latter foe being the most successful in establishing a foothold in Thrace. The Ottomans swiftly expanded through the Balkans and cut off Constantinople,
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