Arikah Map

Roman legion

(Redirected from Legion)

'Legion' redirects here. For other uses of this word, see: Legion (disambiguation).
Roman legion:rmn-military-header.png

This article is part of the series on:

Military of ancient Rome (Portal)
800 BC - AD 476

Structural history
Roman army (unit types,
legions, generals)
Roman navy (fleets, admirals)
Campaign history
Lists of Wars and Battles
Decorations and Punishments
Technological history
Military engineering (castra,
siege engines)
Personal equipment
Political history
Strategy and tactics
Infantry tactics
Frontiers and fortifications

The Roman legion (from Latin legio, legionis, f., from lego, legere, legi, lectus — "to collect") is a term that can apply both as a transliteration of legio ("conscription" or "army") to the entire Roman army and also, more narrowly (and more commonly), to the heavy infantry that was the basic military unit of the ancient Roman army in the period of the late Roman Republic and the Roman Empire. In this latter meaning, it consisted of several cohorts of heavy infantry known as legionaries. It was almost always accompanied by one or more attached units of auxiliaries, who provided cavalry, ranged troops and skirmishers to complement the legion's heavy infantry. The size of a typical legion varied widely throughout the history of ancient Rome, with complements ranging from 5000-6000 men in the republican period of Rome, to the fairly standard number of around 5,400 in the early and middle imperial period and finally to on average 1000-2000 men in the very late imperial period. As legions were not standing armies until the Marian reforms (c. 107 BC), and were instead created, used, and disbanded again, several hundred Legions were named and numbered throughout Roman history. To date, about 50 have been identified. In the time of the Early Roman Empire, there were usually about 28 standing Legions plus their Auxiliaries, with more raised as needed.

Due to the enormous military successes of the Roman Republic and the Roman Empire the legion has long been regarded as the prime ancient model for military efficiency and ability.


Contents

History

Main articles: Military history of ancient Rome and Structure of the Roman military

Early "legions"

In the early years of the Roman Kingdom and the Roman Republic, one or more legions were raised annually as required by the state. Although they share the name legion with the later units of the empire, they were quite different. In the Roman Empire the legions became only one part of the army (predominantly heavy infantry) with other roles fulfilled by allied troops. But in the Roman Kingdom up until the 2nd century BC, the legion included light troops and cavalry whose roles would later be taken on by allied troops. "Legionary" or "legion" is therefore not an equivalent term when comparing earlier to later troops - a legionary of the Republic could well be a lightly armed skirmisher.

Early history

Originally, in the time of the Kings, the legio ("conscription") was the whole Roman army, composed of levied citizens. The early Roman army, however, was different than the later imperial army. Under the Etruscan Kings, the massive Greek phalanx was the mode of battle. Roman soldiers would have thus looked much like Greek hoplites.Much of Roman history of this era is founded on legends, but it is believed that during the reign of Servius Tullius, the census (the counting of the people) was introduced. With this, all Roman able-bodied, property-owning male citizens were divided into five classes for military service based on wealth, soldiers having to acquire their own weapons and equipment. These classes were further organized into units of 100 called Centuries.

Joining the army was a both a duty and a distinguishing mark of Roman citizenship: during the entire pre-Marian period the wealthiest land owners performed the most years of military service, since these would have had the most to lose should the state have fallen.

The first class was armed in the fashion of the hoplite with spear, sword, helmet, breast plate and round shield (an aspis, the so-called hoplon); the second and third class also acted as spearmen, but with reduced armour and the larger oval or rectangular shield. The fourth class could afford no armour, perhaps a small shield, and was armed with spear and javelin. The fifth and final class was composed only of slingers. The army officers as well as the cavalry were drawn from leading citizens who enrolled as equestrians (equites).

Rome sustained an army consisting of some 18 centuries of equites, 82 centuries of the first class (of which 2 centuries were engineers), 20 centuries each of the second, third and fourth classes and 32 centuries of the fifth class (of which 2 centuries were trumpeters).[1]

Tactics were no different from those of the early Greeks and battles were joined on a plain. Spearmen would then deploy themselves in tightly packed rows. The members of each row closed to form a "shield wall", their spears pointed forwards, and charged the enemy supported by their javelin throwers and slingers: the cavalry pursued the enemy, and sometimes dismounted to support the infantry in dire situations. It wasa cumbersome military unit to maneuver, and easily defeated by mountain tribes such as Volsci or Samnites in rough terrains.

Early civilian authorities, called "praetors", doubled as military leaders during the war season; lasting from spring to autumn. A formal war declaration included a religious ceremony that ended in the throwing of a ceremonial javelin into the enemy's territory to mark the start of hostilities.

At some point, possibly in the beginning of the Roman Republic after the kings were overthrown, the legio was subdivided into two separate legions, each one ascribed to one of the two Consuls. In the first years of the Republic, when warfare was mostly concentrated on raiding, it is uncertain if the full manpower of the legions was summoned at any one time. Legions became more formally organized in the 4th century BC, as Roman warfare evolved to more frequent and planned operations, and the consular army was raised to two legions.

In the Republic, legions had an ephemeral existence. Except for Legio I to IV, which were the consular armies (two per consul), other units were levied by campaign. Rome's Italian allies were required to provide a legion to support each Roman legion.

Mid-Republic

Roman legion:Re-enactor showing Roman military equestrian
Enlarge
Re-enactor showing Roman military equestrian

The military tribunes appeared after 331 BC (at first these tribunes took turns as the legion's commanding officer). The internal organization of the legion became more sophisticated, from the classic phalanx to the manipular system, and allowed important tactical innovations. For the first time, the classes of soldiers who comprised the legions were based on experience and age rather than wealth, with standard weapons and equipment issued by the state. (The exception was the Equites, who comprised the cavalry elements and still provided their own horses).

In the middle of the Republic, legions were composed of the following units:

Each of these three lines was subdivided into maniples, the lowest subunit of the army, each consisting of two centuries commanded by the senior of the two centurions. Centuries were nominally 80 soldiers each (not 100, as is popularly believed), but in practice might be as few as 60, especially in the less numerous triarii maniples. Each century had its standard and was made up of ten units called contubernia. In a contubernium, there would be eight soldiers who shared a tent, millstone, a mule and cooking pot (depending on duration of tour).Because maniples were their main tactical elements, the legions of the early Republic are sometimes referred to as Manipular legions.


Imperial legions

Following the Marian reforms of the 2nd century BC, the legions took on the second, narrower meaning that is familiar in the popular imagination as close-order citizen heavy infantry.

Marian reforms

At the end of the 2nd century BC Gaius Marius reformed the previously ephemeral legions as a professional force drawing from the poorest classes, enabling Rome to field larger armies and providing employment for jobless citizens of the city of Rome.However, this put the loyalty of the soldiers in the hands of their general rather than Rome itself. In this period all Italian regions obtained full Roman citizenship and provided a larger basis for the army, supplemented by poor urban Romans.

The legions of the Late Republic and Early Empire are often called Marian legions. Following the Battle of Vercellae in 101 BC, Marius granted all Italian soldiers Roman citizenship. He justified this action to the Senate by saying that in the din of battle he could not distinguish Roman from ally. This effectively eliminated the notion of allied legions; henceforth all Italian legions would be regarded as Roman legions, and full Roman citizenship was open to all the regions of Italy. Thus the three different types of heavy infantry were replaced by a single, standard type based on the Principes: armed with two heavy javelins called "pila", the short sword called "gladius", chain mail (lorica hamata) or banded armor (lorica segmentata), helmet and rectangular shield (scutum).

The role of allied legions would eventually be taken up by contingents of allied auxiliary troops, called Auxilia. Each Legion had an auxilia of similar size, which contained specialist units, engineers and pioneers, artillerymen and craftsmen, service and support personnel and irregular units made up of non-citizens, mercenaries and local militia. These were usually formed into complete units such as light cavalry, light infantry or velites, and laborers. There was also a reconnaissance squad of 10 or more light mounted infantry called Speculatores who could also serve as messengers or even as an early form of military intelligence service.

As part of the Marian reforms, the legions' internal organization was standardized. Each legion was divided into cohorts. Prior to this, cohorts had been temporary administrative units or tactical task forces of several maniples, even more transitory than that of the legions of the early republic themselves. Now the cohorts were six to ten permanent units, composed of five to eight centuries each led by a centurion assisted by an optio, a soldier who could read and write. These came to form the basic tactical unit of the legions. The senior centurion of the legion was called the primus pilus, a career soldier and advisor to the legate that sometimes was promoted to the higher rank.

Every legion had a baggage train of 500–550 mules or about 1 mule for every 10 legionaries. To keep these baggage trains from becoming too large and slow, Marius had each infantryman carry as much of his own equipment as he could, including his own armour, weapons and 15 days' rations, for about 50–60 pounds of load total. To make this easier, he issued each legionary a forked stick to carry their loads on their shoulders. The soldiers were nicknamed Marius' Mules due to the amount of gear they had to carry themselves. This arrangement allowed for the supply train to become detached from the main body of the legion, thus greatly increasing the army's speed while on the march.

A typical legion of this period had around 4,000–5,000 legionaries as well as a large number of camp followers, servants and slaves. Legions could contain as many as 6,000 fighting men divided among several cohorts, although much later in Roman history the number was reduced to 1,000 to allow for greater mobility. Numbers would also vary depending on casualties suffered during a campaign; Julius Caesar's legions during his campaign in Gaul often only had around 3,500 men.

Tactics were slightly different from the past, but largely improved due to the professional training of the soldiers.

Late Republic and early Empire

Roman legion:A modern reconstruction of a Roman centurion around 70
Enlarge
A modern reconstruction of a Roman centurion around 70
Roman legion:A modern reconstruction of a Roman miles, (10-240)
Enlarge
A modern reconstruction of a Roman miles, (10-240)

After the Marian reforms, and throughout the history of Rome's Late Republic, the legions played an important political role. By the 1st century BC the threat of the legions under a demagogue was recognized. Governors were not allowed to leave their provinces with their legions. When Julius Caesar broke this rule, leaving his province of Gaul and crossing the Rubicon into Italy, he precipitated a constitutional crisis. This crisis and the civil wars which followed brought an end to the Republic and led to the foundation of the Empire under Augustus in 27 BC.

For political and economic reasons, Augustus reduced the number of legions from nearly 50 at the end of his war against Mark Antony to only 25. Generals during the recent Republican civil wars had formed their own legions and numbered them as they wished. When these wars ended, Augustus was left with around fifty legions, with several double counts (multiple Legio X's for instance). Beside streamlining the army, and regulating the soldiers' pay, he corrected these numbering anomalies. During this time, there was a high incidence of Gemina (twin) legions, where two legions were consolidated into a single organization.

At the same time, he greatly increased the number of auxiliaries to the point where they were equal in number to the legionaries. He also created the Praetorian Guard along with a permanent navy where served the "liberti", or freed slaves.

High empire

Augustus' military policies proved sound and cost effective, and were generally followed by his successors. These emperors would carefully add new legions, as circumstances required or permitted, until the strength of the standing army stood at around 30 legions. With each legion having 4,000–6000 legionaries usually supported by an equal number of auxiliary troops, the total force available to a legion commander during the Pax Romana probably ranged from 8,000–12,000, with the more prestigious legions and those stationed on hostile borders or in restive provinces tending to be larger. Some legions may have even been reinforced at times with units making the associated force near 15–16,000 or about the size of a modern division.

Throughout the imperial era, the legions played an important political role. Their actions could secure the empire for an usurper or take it away. For example, the defeat of Vitellius in the Year of the Four Emperors, was decided when the Danubian legions chose to support Vespasian.

In the empire, the legion was standardized, with symbols and an individual history where men were proud to serve. The legion was commanded by a legate or legatus. Aged around thirty, he would usually be a senator on a three year appointment. Immediately subordinate to the legate would be six elected military tribunes — five would be staff officers and the remaining one would be a noble heading for the Senate (originally this tribune commanded the legion). There would also be a group of officers for the medical staff, the engineers, record-keepers, the praefectus castrorum (commander of the camp) and other specialists such as priests and musicians.

Locations of the Roman legions in 80
Roman legion:Locations of Roman legions in the year 80.
Enlarge
Locations of Roman legions in the year 80.

This list[3] shows the locations of the Roman legions around 80:

  1. Legio IX Hispana: York
  2. Legio XX Valeria Victrix and Legio II Adiutrix: Chester
  3. Legio II Augusta: Caerleon
  4. Legio XXII Primigenia and Legio X Gemina: Nijmegen
  5. Legio VI Victrix: Neuss
  6. Legio XXI Rapax: Bonn
  7. Legio XIV Gemina: Mainz
  8. Legio I Adiutrix: near Mainz
  9. Legio VIII Augusta: Strasbourg
  10. Legio XI Claudia: Vindonissa
  11. Legio XV Apollinaris: Carnuntum
  12. Legio XIII Gemina: Poetovio
  13. Legio VII Claudia: Viminacium
  14. Legio V Macedonica: Oescus (modern Gigen)
  15. Legio I Italica: Novae (modern Svishtov)
  16. Legio V Alaudae: near Danube
  17. Legio IV Flavia Felix: Burnum
  18. Legio XVI Flavia Firma: Satala
  19. Legio XII Fulminata: Melitene
  20. Legio VI Ferrata: Samosata
  21. Legio IV Scythica: Zeugma
  22. Legio III Gallica: near Damascus
  23. Legio X Fretensis: Jerusalem
  24. Legio XXII Deiotariana: Nicopolis
  25. Legio III Cyrenaica: Coptos
  26. Legio III Augusta: Lambaesis
  27. Legio VII Gemina: Leon

Late Empire

Roman legion:Roman legionary, end of 3rd century.
Enlarge
Roman legionary, end of 3rd century.

In the Later Roman Empire, the number of legions was increased and the Roman Army expanded. There is no evidence to suggest that legions changed in form before the Tetrarchy, although there is evidence that they were smaller than the paper strengths usually quoted. The final form of the legion originated with the elite legiones palatinae created by Diocletian and the Tetrarchs. These were infantry units of around 1,000 men rather than the 5,000, including cavalry, of the old Legions. The earliest legiones palatinae were the Lanciarii, Joviani, Herculiani and Divitenses.

The 4th century saw a very large number of new, small legions created, a process which began under Constantine II. In addition to the elite palatinae, other Legions called comitatenses and pseudocomitatenses, along with the auxilia palatina, provided the infantry of late Roman armies. The Notitia Dignitatum lists 25 legiones palatinae, 70 legiones comitatenses, 47 legiones pseudocomitatenses and 111 auxilia palatina in the field armies, and a further 47 legiones in the frontier armies.[4] Legion names such as Honoriani and Gratianenses found in the Notitia suggest that the process of creating new legions continued through the 4th century rather than being a single event. The names also suggest that many new legions were formed from vexillationes or from old legions.

According to the late Roman writer Vegetius' De Re Militari, each century had a ballista and each cohort had an onager (or Wild Ass in Latin), giving the legion a formidable siege train of 59 Ballistae and 10 Onagers each manned by 10 libritors (artillerymen) and mounted on wagons drawn by oxen or mules. In addition to attacking cities and fortifications, these would be used to help defend Roman forts and fortified camps (castra) as well. They would even be employed on occasion, especially in the later Empire, as field artillery during battles or in support of river crossings.

Legionary officers

The following list describes the system of officers which developed within the legions from the Marian reforms (104 BC) until the military reforms of Diocletian (circa 290).

Senior officers

Mid-level officers

Low-level officers

Special duty posts

Pay

From the time of Gaius Marius onwards, Legionaries received 225 denarii a year; this basic rate remained unchanged until Domitian, who increased it to 300 denarii. In spite of the steady inflation during the 2nd century, there was no further rise until the time of Septimius Severus, who increased it to 500 denarii a year. This salary would be supplemented by the booty taken in a campaign.

All legionary soldiers would also receive a sizeable sum of money on the completion of their term of service: 3000 denarii from the time of Augustus and/or a plot of good farmland (good land was in much demand). Later, under Caracalla, the praemia increased to 5000 denarii.


Symbols

From 104 BC onwards, each legion used an aquila (eagle) as its standard symbol. The symbol was carried by an officer known as aquilifer, and its loss was considered to be a very serious embarrassment, and often led to the disbanding of the legion itself.[citation needed]

In Gallic War (Bk IV, Para. 25), Julius Caesar describes an incident at the start of his first invasion of Britain in 55BC that illustrated how fear for the safety of the eagle could drive Roman soldiers. When Caesar's troops hesitated to leave their ships for fear of the Britons, the aquilifer of the tenth legion threw himself overboard and, carrying the eagle, advanced alone against the enemy. His comrades, fearing disgrace, 'with one accord, leapt down from the ship' and were followed by troops from the other ships.

With the birth of the Roman Empire, the legions created a bond with their leader, the emperor himself. Each legion had another officer, called imaginifer, whose role was to carry a pike with the imago (image, sculpture) of the emperor as pontifex maximus.

Each legion, furthermore, had a vexillifer who carried a vexillum or signum, with the legion name and emblem depicted on it, unique to the legion. It was common for a legion, to detach some sub-units from the main camp, to strengthen other corps. In these cases, the detached subunits carried only the vexillum, and not the aquila, and were called, therefore, vexillationes. A miniature vexillum , mounted on a silver base, was sometimes awarded to officers as a recognition of their service upon retirement or reassignment.

Life in the legions

Discipline

Main article: List of Roman military decorations and punishments

The military discipline of the legions was quite harsh. Regulations were strictly enforced, and a broad array of punishments could be inflicted upon a legionary who broke them. Many legionaries became devotees in the cult of the minor goddess Disciplina, whose virtues of frugality, severity and loyalty were central to their code of conduct and way of life.

Minor punishments


Major punishments

Factors in the Legion's success

For a more detailed analysis of these and other factors, as well as the Romans in battle, see the articles Roman infantry tactics and Roman military personal equipment.

Bibliography

Notes

  1. ^ Taken from http://roman-empire.net/army/army.html
  2. ^ Mccall, Jeremiah B. The Cavalry of the Roman Republic: Cavalry Combat and Elite Reputations in the Middle and Late Republic. (New York, Routledge, 2002) pp. 53ff
  3. ^ The list is taken, with modifications, from: Simkins, Michael, The Roman Army from Caesar to Trajan [Rev ed.], Osprey Publishing, 1984. ISBN 0-85045-528-6 .
  4. ^ Totals from summary of Notitia Dignitatum in Richardot, Philippe, La fin de l'armée romaine 284-476 [3rd ed.] Economica, 2005. ISBN 2-7178-4861-4 .
  5. ^ Montesquieu C., Considerations on the Causes of the Greatness of the Romans and Their Decline, Hacket, 1999, p.24

See also

<span class="FA" id="de" style="display:none;" /><span class="FA" id="sv" style="display:none;" />

Categories


Articles with unsourced statements | Articles that include images for deletion | Ancient military units and formations | Roman legions

Find

Find

Find