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Battle of Pharsalus


 
 
The Battle of Pharsalus was a decisive battle of Caesar's Civil WarCaesar's civil war

The Roman civil war of 49 BC, sometimes called Caesar's Civil War, is one of the last conflicts within the Roman Republic....
. On August 9, 48 BC, the battle was fought at Pharsalus in central GreeceFacts About Greece

GreeceGreece lies at the juncture of Europe, Asia, and Africa....
 between forces of the PopularesPopulares

Populares were aristocratic leaders in the late Roman Republic who tended to use the peoples' assemblies in an effort to bre...
 faction and forces of the OptimatesOptimates Overview

Optimates were the aristocratic faction of the later Roman Republic....
 faction. Both factions field armies from the Roman RepublicRoman Republic

The Roman Republic was a phase of the ancient Roman civilization characterized by a republican form of government....
. The Populares were led by Gaius Julius CaesarJulius Caesar

Gaius Julius Caesar , July 12 or July 13, 100 BC – March 15, 44 BC) was a Roman military and political leader and one ...
 (Caesar) and the Optimates were led by Gnaeus Pompeius MagnusPompey

Pompey, Pompey the Great or Pompey the Triumvir , was a distinguished military and political leader of the l...
 (Pompey). In addition to Pompey, the Optimates faction included most of the Roman SenateRoman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
. The victory of Caesar weakened the SenatorialRoman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
 forces and solidified his control over the RepublicRoman Republic Overview

The Roman Republic was a phase of the ancient Roman civilization characterized by a republican form of government....
.
PreludePompey and the Roman SenateFacts About Roman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
 fled ItalyItaly

Italy, officially the Italian Republic , is a Southern European country....
 for GreeceGreece

GreeceGreece lies at the juncture of Europe, Asia, and Africa....
 in 49 BC to prepare an army. Caesar, for lack of a fleet, solidified his control over the western Mediterranean — SpainSpain

Spain, officially the Kingdom of Spain , is a European parliamentary monarchy....
, specifically, before assembling ships to follow Pompey.
Caesar therefore marched overland through southern FranceFrance

France, officially the French Republic, is a country whose metropolitan territory is located in Western Europe and whi...
, blockading what is now MarseilleSiege of Massilia

The Siege and naval Battle of Massilia was an episode of Caesar's civil war, fought in 49 BC....
, and managing to assemble a small fleet.






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Timeline

48 BC   Battle of Pharsalus: Caesar decisively defeats Pompey at Pharsalus and Pompey flees to Egypt.

46 BC   Julius Caesar dedicates a temple to his mythical ancestor Venus Genetrix in fulfilment of a vow he made at the battle of Pharsalus.






Encyclopedia


The Battle of Pharsalus was a decisive battle of Caesar's Civil WarCaesar's civil war

The Roman civil war of 49 BC, sometimes called Caesar's Civil War, is one of the last conflicts within the Roman Republic....
. On August 9, 48 BC, the battle was fought at Pharsalus in central GreeceFacts About Greece

GreeceGreece lies at the juncture of Europe, Asia, and Africa....
 between forces of the PopularesPopulares

Populares were aristocratic leaders in the late Roman Republic who tended to use the peoples' assemblies in an effort to bre...
 faction and forces of the OptimatesOptimates Overview

Optimates were the aristocratic faction of the later Roman Republic....
 faction. Both factions field armies from the Roman RepublicRoman Republic

The Roman Republic was a phase of the ancient Roman civilization characterized by a republican form of government....
. The Populares were led by Gaius Julius CaesarJulius Caesar

Gaius Julius Caesar , July 12 or July 13, 100 BC – March 15, 44 BC) was a Roman military and political leader and one ...
 (Caesar) and the Optimates were led by Gnaeus Pompeius MagnusPompey

Pompey, Pompey the Great or Pompey the Triumvir , was a distinguished military and political leader of the l...
 (Pompey). In addition to Pompey, the Optimates faction included most of the Roman SenateRoman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
. The victory of Caesar weakened the SenatorialRoman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
 forces and solidified his control over the RepublicRoman Republic Overview

The Roman Republic was a phase of the ancient Roman civilization characterized by a republican form of government....
.

Prelude

Pompey and the Roman SenateFacts About Roman Senate

The Roman Senate was the main governing council of both the Roman Republic, which started in 510 BC, and the Roman Empire, w...
 fled ItalyItaly

Italy, officially the Italian Republic , is a Southern European country....
 for GreeceGreece

GreeceGreece lies at the juncture of Europe, Asia, and Africa....
 in 49 BC to prepare an army. Caesar, for lack of a fleet, solidified his control over the western Mediterranean — SpainSpain

Spain, officially the Kingdom of Spain , is a European parliamentary monarchy....
, specifically, before assembling ships to follow Pompey.
Caesar therefore marched overland through southern FranceFrance

France, officially the French Republic, is a country whose metropolitan territory is located in Western Europe and whi...
, blockading what is now MarseilleSiege of Massilia

The Siege and naval Battle of Massilia was an episode of Caesar's civil war, fought in 49 BC....
, and managing to assemble a small fleet. After crushing Pompey's forces in SpainSpain

Spain, officially the Kingdom of Spain , is a European parliamentary monarchy....
, Caesar focused once again on Pompey and his troops in Greece. Pompey had a large fleet, as well as much support from all Roman provinces and client stateClient state Summary

A client state is a state subservient to another state....
s east of Italy. Caesar, however, managed to cross the Adriatic in the winter, with Mark AntonyMark Antony

Marcus Antonius , known in English as Mark Antony, was a Roman politician and general....
 following a little later because Caesar lacked sufficient ships. Although Pompey had a larger army, he recognized that Caesar's troops were more experienced, and could prove victorious in a pitched battle. Instead, Pompey waited Caesar's troops out, attempting to starve them by cutting off Caesar's supply lines. Caesar made a near disastrous attack on Pompey's camp at DyrrhachiumFacts About Battle of Dyrrhachium (48 BC)

The Battle of Dyrrachium on 10 July 48 BC was one of a series of contests between Julius Caesar and Pompey that ended with P...
 and was forced to pull away.

Pompey did not immediately follow up on his success. An indecisive winter of blockade and siege followed. Pompey eventually pushed Caesar into ThessalyFacts About Thessaly

Thessaly is one of the 13 peripheries of Greece, and is further sub-divided into 4 prefectures....
 and urged on by his senatorial allies, he confronted Caesar near Pharsalus. Caesar began the battle with a smaller, but veteran, force. Pompey's troops were more numerous, but far less experienced. Moreover, Pompey's senatorial allies disagreed with Pompey over whether to fight at Pharsalus, and pushed Pompey, who wanted to starve Caesar's soldiers, into a quick decision.

Caesar had the following legions with him:
  • Legions of veterans from the Gallic WarsGallic Wars

    The Gallic Wars were a series of military campaigns by several invading Roman legions under the command of Julius Caesar int...
     – Caesar's favourite legion, X EquestrisLegio X Equestris

    Legio X Equestris, was a Roman legion founded by Julius Caesar in 61 BC....
    , and those later known with the names of VIII Augusta, VIIII HispanaLegio IX Hispana

    Legio IX Hispana was a Roman legion probably levied by Julius Caesar before 58 BC, for his Gallic wars....
    , and XII FulminataLegio XII Fulminata

    Legio XII Fulminata, also known as Paterna, Victrix, Antiqua, Certa Constans, an...
  • Legions levied for the civil war – legions later known as I GermanicaLegio I Germanica

    Legio I Germanica, the German legion, was a Roman legion, possibly levied in 48 BC by Julius Caesar to fight for him...
    , III GallicaLegio III Gallica Summary

    Legio III Gallica was a Roman legion levied by Julius Caesar around 49 BC, for his civil war against the conservative re...
    , and IIII Macedonica


However, all of these legions were 'short', and did not have the requisite numbers of troops. Some only had about a thousand men at the time of Pharsalus, due partly to losses at Dyrrhachium and partly to Caesar's wish to rapidly advance with a picked body as opposed to a ponderous movement with a large army.

Battle

Deployment

Both commanders realized that if one army was able to flank the other, they would probably win. As such, both commanders put a substantial amount of effort into ensuring that the other would be unable to 'sneak around to the back'. The battle was held with the River EnipeusEnipeus

In Greek mythology, Enipeus was an Oceanid, son of Oceanus and Tethys....
 to Caesar's left, ensuring that neither side would be able to move around the other army on Caesar's left. The most important part of the battle was to happen on Caesar's right. Pompey hoped to win by using his superior cavalry to mount a two-front attack on Caesar's forces. As such, he placed a large contingent of cavalry on Caesar's right, with light forces consisting of slingersSling (weapon)

A sling is a projectile weapon typically used to throw a blunt missile such as a stone....
 (funditores) and archersArchery

Archery is the practice of using a bow to shoot arrows....
 (sagittarii). Caesar placed his cavalry on his right, with the fourth battle line in reserve behind the main infantry body and at right angle to it.

Conflict

When the two generals had finished deploying their troops, the infantry began to close. Pompey ordered his soldiers not to charge (against the standards of the day) having a plan of tiring the enemy out. This tactic backfired as Caesar's veteran centurions, foreseeing Pompey's trap, stopped halfway on their charge, and allowed their lines to rest.

By the river, the light infantryLight infantry

Rifle regiment redirects here. See also The Light Infantry and The Rifles, regiments in the British Army....
 skirmished, before the heavy infantryRoman legion

The Roman legion was the basic military unit of the ancient Roman army....
 closed. Titus LabienusTitus Labienus

Titus Labienus was the most important member of a Roman family said to belong to the gens Atia....
 led a cavalry charge, and succeeded in pushing back Caesar's cavalry and light infantry. However, when confronted by Caesar's fourth line of heavy infantry, made from one cohort of the last line of every legion, Labienus' charge was pushed back, and the light infantry and cavalry of Pompey's right were pushed into the foothills of Mount Dogandzis. Caesar's fourth battle line wheeled into Pompey's rear at the same moment when Caesar pushed a fresh line of troops into battle. Now facing Caesar's fresh third line at the center of the battle and the attack from behind from Caesar's fourth line, Pompey saw that his defeat was at hand. Caesar told his legionaries to thrust their pilaPila Overview

Pila is a town in northwestern Poland....
 (plural of pilumFacts About Pilum

The pilum was a throwing spear commonly used by the Roman army in ancient times....
) into the enemy cavalrymen's faces instead of throwing them. Pompey fled the battle while his troops were defeated under pressure. Caesar ransacked Pompey's camp, and took control of the remainder of Pompey's army.

Aftermath

Pompey fled from Pharsalus to EgyptEgypt

Egypt , officially the Arab Republic of Egypt, is a Middle Eastern country in North Africa....
, where he was assassinated on the order of PharaohPharaoh Summary

Pharaoh is a title used to refer to any ruler, usually male, of the Egyptian kingdom in the pre-Christian, pre-Islamic perio...
 Ptolemy XIII. The Battle of Pharsalus ended the wars of the First TriumvirateFirst Triumvirate

The First Triumvirate is a common name among historians to refer to the unofficial political alliance of Gaius Julius Caesar...
. The Roman Civil War, however, was not ended. Pompey's two sons, the most important of whom was Sextus Pompeius, and the Pompeian faction led now by Labienus, survived and fought their cause in the name of Pompey the Great. Caesar spent the next few years 'mopping up' remnants of the senatorial factionOptimates

Optimates were the aristocratic faction of the later Roman Republic....
. After finally completing this task, he was assassinated in a conspiracy arranged by Marcus Junius BrutusMarcus Junius Brutus

Marcus Junius Brutus Caepio , or simply Brutus, was a Roman patrician of the late Roman Republic....
 and Gaius Cassius LonginusGaius Cassius Longinus Summary

Gaius Cassius Longinus was a Roman senator and the prime mover in the conspiracy against Julius Caesar....
.

Note

The date of the battle is given as 9 August. This is according to the republican calendar. The date according to the Julian calendar, was either 29 June 48 BC (according to Le Verrier's chronological reconstruction) or 7 June 48 BC (according to Drumann/Groebe). Pompey was assassinated on September 3rd. The point is not entirely academic; had the battle taken place in the true month of August, when the harvest was becoming ripe, Pompey's strategy of starving Caesar would have been senseless.

Named after battle

The battle gives its name to
  • PharsaliaPharsalia

    Pharsalia is a Roman epic poem by the poet Lucan, telling of the civil war between Julius Caesar and the forces of the Roman...
    , a poem by LucanMarcus Annaeus Lucanus

    Marcus Annaeus Lucanus , better known in English as Lucan, was a Roman poet, born in Corduba , in the Hispania Baetica...
  • Pharsalia, New YorkPharsalia, New York

    Pharsalia is a town in Chenango County, New York, USA....
    , U.S.United States

    The United States of America, also known as the United States, the U.S., the U.S.A., and America, is...
  • Pharsalia TechnologiesPharsalia Technologies

    Pharsalia Technologies, Inc. was founded in December 1999, located in Roswell, Georgia, as an emerging company developing ne...
    , Inc.

Further reading

  • William E. Gwatkin, Jr., Some Reflections on the Battle of Pharsalus, Transactions and Proceedings of the American Philological Association, Vol. 87. (1956), pp. 109-124.