Infantry is a military specialization of military personnel who engage in ground combat on foot. Infantry generally consists of light infantry, irregular infantry, heavy infantry, mountain infantry, motorized infantry, mechanized infantry, airborne infantry, air assault infantry, and naval infantry.
The Roman legion, the largest military unit of the Roman army, comprised 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic and 5,600 infantry and 200 auxilia in the period of the Roman Empire.
PubliusVegetius Renatus, known as Vegetius, was a writer of the Later Roman Empire. Nothing is known of his life or station beyond what is contained in his two surviving works: Epitoma rei militaris, and the lesser-known Digesta Artis Mulomedicinae, a guide to veterinary medicine. He identifies himself in the opening of his work Epitoma rei militaris as a Christian.
The Roman legionary was a professional heavy infantryman of the Roman army. These soldiers would conquer and defend the territories of ancient Rome during the late Republic and Principate eras, alongside auxiliary and cavalry detachments. At its height, Roman legionaries were viewed as the foremost fighting force in the Roman world, with commentators such as Vegetius praising their fighting effectiveness centuries after the classical Roman legionary disappeared.
A cohort was a standard tactical military unit of a Roman legion. Although the standard size changed with time and situation, it was generally composed of 480 soldiers. A cohort is considered to be the equivalent of a modern military battalion. The cohort replaced the maniple. From the late second century BC and until the middle of the third century AD, ten cohorts made up a legion. Cohorts were named "first cohort,” "second cohort," etc. The first cohort consisted of experienced legionaries, while the legionaries in the tenth cohort were less experienced.
The Battle of Thapsus was a military engagement that took place on April 6, 46 BC near Thapsus. The forces of the Optimates, led by Quintus Caecilius Metellus Scipio, were defeated by the forces of Julius Caesar. It was followed shortly by the suicides of Scipio and his ally, Cato the Younger, the Numidian King Juba, and his Roman peer Marcus Petreius.
In the Roman Republic and the Roman Empire, the Latin word castrum, was a military-related term.
In the Roman army during classical antiquity, a centurion, was a commander, nominally of a century, a military unit originally consisting of 100 legionaries. The size of the century changed over time, and from the first century BC through most of the imperial era was reduced to 80 men.
Plumbatae or martiobarbuli were lead-weighted darts carried by infantrymen in Antiquity and the Middle Ages.
Roman military personal equipment was produced in large numbers to established patterns, and used in an established manner. These standard patterns and uses were called the res militaris or disciplina. Its regular practice during the Roman Republic and Roman Empire led to military excellence and victory. The equipment gave the Romans a very distinct advantage over their barbarian enemies, especially so in the case of armour. This does not mean that every Roman soldier had better equipment than the richer men among his opponents. Roman equipment was not of a better quality than that used by the majority of Rome's adversaries. Other historians and writers have stated that the Roman army's need for large quantities of "mass produced" equipment after the so-called "Marian Reforms" and subsequent civil wars led to a decline in the quality of Roman equipment compared to the earlier Republican era:
The production of these kinds of helmets of Italic tradition decreased in quality because of the demands of equipping huge armies, especially during civil wars...The bad quality of these helmets is recorded by the sources describing how sometimes they were covered by wicker protections, like those of Pompeius' soldiers during the siege of Dyrrachium in 48 BC, which were seriously damaged by the missiles of Caesar's slingers and archers.
It would appear that armour quality suffered at times when mass production methods were being used to meet the increased demand which was very high the reduced size cuirasses would also have been quicker and cheaper to produce, which may have been a deciding factor at times of financial crisis, or where large bodies of men were required to be mobilized at short notice, possibly reflected in the poor-quality, mass produced iron helmets of Imperial Italic type C, as found, for example, in the River Po at Cremona, associated with the Civil Wars of AD 69 AD; Russell Robinson, 1975, 67
Up until then, the quality of helmets had been fairly consistent and the bowls well decorated and finished. However, after the Marian Reforms, with their resultant influx of the poorest citizens into the army, there must inevitably have been a massive demand for cheaper equipment, a situation which can only have been exacerbated by the Civil Wars...
The Battle of Cissa was part of the Second Punic War. It was fought in the fall of 218 BC, near the Celtic town of Tarraco in north-eastern Iberia. A Roman army under Gnaeus Cornelius Scipio Calvus defeated an outnumbered Carthaginian army under Hanno, thus gaining control of the territory north of the Ebro River that Hannibal had just subdued a few months prior in the summer of 218 BC. This was the first battle that the Romans had ever fought in Iberia. It allowed the Romans to establish a secure base among friendly Iberian tribes, and due to the eventual success of the Scipio brothers in Spain, Hannibal looked for but never received reinforcements from Spain during the war.
The Battle of the Rhône Crossing was a battle during the Second Punic War in September of 218 BC. Hannibal marched on the Italian Alps, and an army of Gallic Volcae attacked the Carthaginian army on the east bank of the Rhône. The Roman army camped near Massalia. The Volcae tried to prevent the Carthaginians from crossing the Alps and invading Italy.
Velites were a class of infantry in the Roman army of the mid-Republic from 211 to 107 BC. Velites were light infantry and skirmishers armed with javelins, each with a 75cm wooden shaft the diameter of a finger, with a 25cm narrow metal point, to fling at the enemy. They also carried short thrusting swords, or gladii, for use in melee. They rarely wore armour as they were the youngest and poorest soldiers in the legion and could not afford much equipment. They did carry small wooden shields called parma for protection, and wore headdresses made from wolf skins so their brave deeds could be recognized. The velites were placed at the front partly for tactical reasons, and also so that they had the opportunity to secure glory for themselves in single combat.
The legions of the Roman Republic and Empire had a fairly standardised dress and armour, particularly from approximately the early to mid 1st century onward, when Lorica Segmentata was introduced. However the lack of unified production for the Roman army meant that there were still considerable differences in detail. Even the armour produced in state factories varied according to the province of origin.
In military contexts, a train is the logistical transport elements accompanying a military force. Often called a supply train or baggage train, it has the job of providing materiel for their associated combat forces when in the field. When focused on provision of field artillery and its ammunition, it may be termed an artillery train. For sieges, the addition of siege engines to an artillery train was called a siege train. These military terms predate, and do not imply a railway train, though railways are often employed for modern logistics, and can include armoured trains.
A loaded march is a relatively fast march over distance carrying a load and is a common military exercise.
The Imperial Roman army was the military land force of the Roman Empire from 27 BC to 476 AD, and the final incarnation in the long history of the Roman army. This period is sometimes split into the Principate and the Dominate (284–476) periods.
Roman infantry tactics are the theoretical and historical deployment, formation, and manoeuvres of the Roman infantry from the start of the Roman Republic to the fall of the Western Roman Empire. The focus below is primarily on Roman tactics: the "how" of their approach to battle, and how it stacked up against a variety of opponents over time. It does not attempt detailed coverage of things like army structure or equipment. Various battles are summarized to illustrate Roman methods with links to detailed articles on individual encounters.
The Battle of Silva Litana was an ambush that took place in a forest 75 miles northwest of the Roman city of Ariminum during the Second Punic War in 216 BC. The Gallic Boii surprised and destroyed a Roman army of 25,000 men under the consul-elect Lucius Postumius Albinus and destroyed the Roman army, with only ten men surviving the ambush, a few prisoners were taken by the Gauls and Postumius was killed, his corpse was decapitated and his skull was covered with gold and used as a ceremonial cup by the Boii. News of this military disaster, reaching Rome probably after the election of consuls for 215 BC in Spring 215 BC or after the defeat at Cannae in the fall of 216 BC, triggered a renewed panic in Rome and forced the Romans to postpone military operations against the Gauls until the conclusion of the Second Punic War. Rome decided to focus on defeating Hannibal and sent only two legions to guard against any possible Gallic attack, however, the Boii and Insubres did not attack the Romans to exploit their victory. Cisalpine Gaul remained in relative peace until 207 BC, when Hasdrubal Barca arrived in Cisapline Gaul with his army from Spain.
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