Campaign history of the Roman military
In 753 BC, the city of Rome emerged from a cluster of small villages on the Palatine Hill. Its first military actions were not grand conquests but desperate struggles for survival against immediate neighbors. The legendary account describes Romulus fortifying this hilltop settlement and immediately engaging in warfare with surrounding Latin cities and the Sabines. According to Livy, the Sabine women were abducted by Roman men, prompting the village of Caenina to invade Roman territory. Roman forces routed these invaders and captured their village. Subsequent conflicts saw the Latins of Antemnae and Crustumerium defeated in similar fashion.
The wars continued through the reigns of the early kings. Tarquinius Priscus ruled from 616 BC to 579 BC and waged war against the Latins. He took the town of Apiolae by storm and returned to Rome with great booty. His military ability was tested when the Sabines attacked him. Tarquinius doubled the number of equites to strengthen his army and eventually defeated them. In peace negotiations following this victory, he received the town of Collatia and appointed his nephew Arruns as commander of its garrison. A triumph was celebrated on the 13th of September 585 BC according to the Fasti Triumphales.
Servius Tullius reigned from 578 BC to 535 BC and fought wars against Veii and the Etruscans. He is said to have shown valour in these campaigns and routed a great enemy army. The Fasti Triumphales records three triumphs over the Etruscans, including dates of the 25th of November 571 BC and the 25th of May 567 BC. The final king, Tarquinius Superbus, ruled from 535 BC to 509 BC. He called a meeting of Latin leaders at a grove sacred to the goddess Ferentina to form a united military force. This combined unit of Roman and Latin troops then engaged the Volsci. Tarquin took the wealthy town of Suessa Pometia and used the spoils to begin construction of the Temple of Jupiter Optimus Maximus.
Tarquinius later attempted to take the Rutulian capital Ardea by storm but failed. He began an extensive siege that was interrupted by a revolution. The Roman army camped outside Ardea welcomed Lucius Junius Brutus as their new leader and expelled the king's sons. The outcome of this siege remains unclear, marking the end of the monarchical era and the beginning of the Republic.
By 390 BC, Gallic tribes had begun invading Italy from the north. A particularly warlike tribe known as the Senones attacked the town of Clusium near Rome's sphere of influence. The Romans met them in pitched battle at the Battle of the Allia around 390, 387 BC. The Gauls under chieftain Brennus defeated a Roman army of approximately 15,000 troops and pursued fleeing soldiers back to Rome itself. They partially sacked the town before being driven off or bought off.
Marcus Furius Camillus gathered scattered forces consisting partly of fugitives and survivors of the Alia battle. He marched on Rome and took the Gauls by surprise. When Brennus tricked the weights measuring gold for the city's ransom, he uttered Vae Victis meaning Woe to the losers. Camillus responded with Non auro sed ferro liberanda est patria stating that the homeland is released with iron not gold. After defeating the Gauls in a subsequent battle, he entered the city in triumph greeted as alter Romulus the other Romulus.
The Samnites were a people just as martial and rich as the Romans. Their objective was securing more lands in the fertile Italian plains where Rome itself lay. The First Samnite War ran between 343 BC and 341 BC following widespread Samnite incursions into Roman territory. It was a relatively short affair where Romans beat the Samnites in both the Battle of Mount Gaurus in 342 BC and the Battle of Suessula in 341 BC. However, they withdrew from the war due to revolts among Latin allies during the Latin War.
Rome bested the Latins in the Battle of Vesuvius and again in the Battle of Trifanum after which Latin cities submitted to Roman rule. The Second Samnite War lasted from 327 BC to 304 BC incorporating twenty-four battles leading to massive casualties on both sides. The Samnites seized Neapolis in 327 BC which Romans re-captured before losing at the Battle of the Caudine Forks and the Battle of Lautulae. By 304 BC Romans had effectively annexed most Samnite territory founding several colonies.
Seven years later the Samnites rose again defeating Romans at Camerinum in 298 BC opening the Third Samnite War. They managed to bring together a coalition including Gauls Etruscans and Umbrians. At the Battle of Sentinum in 295 BC the Roman army won a convincing victory over these combined forces making it clear that little could prevent Roman dominance of Italy.
The First Punic War began in 264 BC when settlements on Sicily appealed to Rome and Carthage for help with internal conflicts. Before this war there was no Roman navy to speak of as all previous wars had been fought on land in Italy. The new conflict against Carthage forced Rome to quickly build a fleet and train sailors. Naval warfare came like a brick to water for them. Early naval battles such as the Battle of the Lipari Islands were catastrophic disasters for the inexperienced city-state.
After training more sailors and inventing a grappling engine known as a Corvus, a Roman force under C. Duillius defeated a Carthaginian fleet at the Battle of Mylae. In just four years a state without real naval experience bettered a major regional maritime power. Further victories followed at Tyndaris and Cape Ecnomus. A Roman force landed on the African coast under Marcus Regulus winning the Battle of Adys and forcing Carthage to sue for peace. However heavy terms caused negotiations to fail.
Carthage hired Xanthippus of Carthage a mercenary from Sparta to reorganize their army. He cut off the Roman army from its base by re-establishing naval supremacy then defeated and captured Regulus at the Battle of Tunis. Despite being defeated on African soil Romans beat Carthaginians again at the Battle of the Aegates Islands largely through tactical innovations. Carthage was left without a fleet or sufficient coin to raise a new one.
The Second Punic War started when Hannibal attacked Saguntum a city with diplomatic ties to Rome. He raised an army in Iberia and famously crossed the Italian Alps with elephants to invade Italy. At Ticinus in 218 BC Hannibal defeated Romans under Scipio the Elder in a small cavalry fight. His success continued with victories at Trebia Lake Trasimene where he ambushed an unsuspecting Roman army and Cannae considered one of the great masterpieces of tactical art.
Unable to defeat Hannibal himself on Italian soil Romans sent an army to Africa threatening the Carthaginian capital. In 203 BC at Bagbrades Scipio Africanus Major defeated Hasdrubal Gisco and Syphax forcing Hannibal's recall. At Zama Scipio decisively defeated Hannibal's army ending the war. Carthage never recovered after this conflict.
Extensive campaigning abroad led soldiers to become increasingly loyal to their commanders rather than the state. This trend resulted from rewarding troops with plunder from campaigns. Between 135 BC and 71 BC three Servile Wars occurred against the Roman state. The third most serious may have involved revolution by 120,000 to 150,000 slaves. Additionally in 91 BC the Social War broke out between Rome and its former allies known as Socii over grievances regarding shared risks without rewards.
Despite defeats like Fucine Lake Roman troops defeated Italian militias in decisive engagements notably Asculum. Although they lost militarily the Socii achieved objectives through legal proclamations granting citizenship to more than 500,000 Italians. Internal unrest reached its most serious stage in two civil wars or marches upon Rome by consul Lucius Cornelius Sulla beginning in 82 BC. At the Colline Gate a Roman army under Sulla bested an army of the Senate and Samnite allies at the very door of the city.
By 59 BC an unofficial political alliance called the First Triumvirate formed between Caesar Crassus and Pompey. In 53 BC Crassus launched an invasion of Parthia marching deep into desert territory. His army was cut off surrounded and slaughtered at Carrhae where Crassus himself perished described as greatest Roman defeat since Hannibal. Death of Crassus removed balance from Triumvirate causing Caesar and Pompey to move apart.
In 49 BC when Caesar crossed Rubicon river with invading forces sweeping down Italian peninsula toward Rome Pompey ordered abandonment of city. Pompey's forces retreated south towards Brundisium then fled to Greece. Caesar first directed attention to Pompeian stronghold of Iberia but following campaigning decided to attack Pompey in Greece. Pompey initially defeated Caesar at Dyrrachium in 48 BC but failed to follow up on victory. He was decisively defeated at Pharsalus despite outnumbering Caesar's forces two to one.
Roman strategic innovations transformed their military capabilities over centuries. Naval warfare remained relatively unexplored until the First Punic War forced rapid development. The invention of Corvus grappling engine allowed Roman ships to board enemy vessels effectively turning naval battles into land fights. This innovation enabled victories against superior Carthaginian fleets despite lack of prior experience.
Siegecraft evolved significantly during campaigns across Italy and beyond. Romans employed extensive sieges such as that of Ardea under Tarquinius Superbus and later Numantia under Scipio Aemilianus. They developed methods to deal with war elephants including javelins fire and physical blows to elephant heads during Pyrrhic conflicts. These adaptations demonstrated ability to counter new threats from foreign powers.
Legionary organization adapted to changing circumstances throughout history. Early armies consisted of tribal units fighting alongside each other. Over time professionalization increased loyalty to commanders rather than state itself. Soldiers became willing to follow generals in battle against the state due to plunder rewards. This shift created internal instability leading to civil wars where troops marched upon Rome itself.
The Roman army also mastered combined arms tactics involving infantry cavalry and specialized units like equites. Tarquinius Priscus doubled number of equites to help defeat Sabines showing early integration of different troop types. Later campaigns saw coordination between legions auxiliary forces and naval elements enabling expansion across Mediterranean regions. Tactical flexibility allowed adaptation to diverse enemies ranging from Gauls to Parthians.
Common questions
When did the Roman military first engage in warfare against neighbors?
The city of Rome emerged from a cluster of small villages on the Palatine Hill in 753 BC and immediately engaged in warfare with surrounding Latin cities and the Sabines. The legendary account describes Romulus fortifying this hilltop settlement and engaging in desperate struggles for survival against immediate neighbors.
What happened during the Battle of the Allia in 390 BC or 387 BC?
Gallic tribes known as the Senones attacked the town of Clusium near Rome's sphere of influence and defeated a Roman army of approximately 15,000 troops at the Battle of the Allia around 390 BC or 387 BC. The Gauls under chieftain Brennus pursued fleeing soldiers back to Rome itself and partially sacked the town before being driven off or bought off.
How did the First Punic War begin in 264 BC?
The First Punic War began in 264 BC when settlements on Sicily appealed to Rome and Carthage for help with internal conflicts. Before this war there was no Roman navy to speak of as all previous wars had been fought on land in Italy until the new conflict forced Rome to quickly build a fleet and train sailors.
When did Hannibal defeat Romans at Cannae during the Second Punic War?
Hannibal achieved victories at Trebia Lake Trasimene where he ambushed an unsuspecting Roman army and Cannae considered one of the great masterpieces of tactical art during the Second Punic War which started when Hannibal attacked Saguntum a city with diplomatic ties to Rome. He raised an army in Iberia and famously crossed the Italian Alps with elephants to invade Italy.
What caused the Third Servile War between 135 BC and 71 BC?
Extensive campaigning abroad led soldiers to become increasingly loyal to their commanders rather than the state resulting from rewarding troops with plunder from campaigns. Between 135 BC and 71 BC three Servile Wars occurred against the Roman state and the third most serious may have involved revolution by 120,000 to 150,000 slaves.
All sources
1 references cited across the entry
- 1journalAgricultural specialization and height in ancient and medieval EuropeNikola Koepke et al. — 1 April 2008