The Roman legion, the largest military unit of the Roman army, comprised 4,200 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.
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 Roman army was the armed forces deployed by the Romans throughout the duration of Ancient Rome, from the Roman Kingdom to the Roman Republic and the Roman Empire, and its medieval continuation, the Eastern Roman Empire. It is thus a term that may span approximately 2,205 years, during which the Roman armed forces underwent numerous permutations in size, composition, organisation, equipment and tactics, while conserving a core of lasting traditions.
Auxiliaries are support personnel that assist the military or police but are organised differently from regular forces. Auxiliary may be military volunteers undertaking support functions or performing certain duties such as garrison troops, usually on a part-time basis. Unlike a military reserve force, an auxiliary force does not necessarily have the same degree of training or ranking structure as regular soldiers, and it may or may not be integrated into a fighting force. Some auxiliaries, however, are militias composed of former active duty military personnel and actually have better training and combat experience than their regular counterparts.
Praefectus, often with a further qualification, was the formal title of many, fairly low to high-ranking, military or civil officials in the Roman Empire, whose authority was not embodied in their person but conferred by delegation from a higher authority. They did have some authority in their prefecture, such as controlling prisons and in civil administration.
A vexillatio was a detachment of a Roman legion formed as a temporary task force created by the Roman army of the Principate. It was named from the standard carried by legionary detachments, the vexillum, which bore the emblem and name of the parent legion.
The Cantabrian Wars, sometimes also referred to as the Cantabrian and Asturian Wars, were the final stage of the two-century long Roman conquest of Hispania, in what today are the provinces of Cantabria, Asturias and León in northwestern Spain.
The auxilia were introduced as non-citizen troops attached to the citizen legions by Augustus after his reorganisation of the Imperial Roman army from 27 BC. By the 2nd century, the Auxilia contained the same number of infantry as the legions and, in addition, provided almost all of the Roman army's cavalry and more specialised troops. The auxilia thus represented three-fifths of Rome's regular land forces at that time. Like their legionary counterparts, auxiliary recruits were mostly volunteers, not conscripts.
Arbeia was a large Roman fort in South Shields, Tyne & Wear, England, now ruined, and which has been partially reconstructed. It was first excavated in the 1870s. All modern buildings on the site were cleared in the 1970s. It is managed by Tyne and Wear Museums as Arbeia Roman Fort and Museum.
Sextus Attius Suburanus Aemilianus, commonly abbreviated as Suburanus, was a Roman eques who helped Trajan consolidate his position as emperor. Originally procurator of Gallia Belgica, Suburanus was appointed prefect of the Roman imperial bodyguard, known as the Praetorian Guard, in the year 98 and brought this important military unit under Trajan's control. For his achievement, at the end of his command of the Guard, Suburanus was adlected into the Roman senate inter praetores, then held the suffect consulship as the colleague of the consul posterior Quintus Articuleius Paetus in AD 101.
Hunnum was a Roman fort on Hadrian's Wall located north of the modern-day village of Halton, Northumberland in North East England. It was the fifth fort on Hadrian's Wall, after Segedunum (Wallsend), Pons Aelius (Newcastle), Condercum and Vindobala. The fort may also have guarded Dere Street which crosses the Roman Wall through the valley immediately to the west. It is situated about 7.5 miles west of Vindobala, and 2.5 miles north of Corstopitum. The site of the fort is bisected by the B6318 Military Road, which runs along the route of the wall at that point.
The equites singulares Augusti were the cavalry arm of the Praetorian Guard during the Principate period of imperial Rome. Based in Rome, they escorted the Roman emperor whenever he left the city on a campaign or on tours of the provinces. The equites singulares Augusti were a highly trained unit dedicated to protecting the emperor. Men who served in the equites singulares Augusti held a Roman public status as equites.
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.
The Ala Afrorum, or Ala Afrorum Veterana, was a Roman cavalry unit founded in Africa Proconsularis. The unit formed an ala quinquagenaria, with a total of about 500 cavalrymen. In the first half of the 1st century AD the unit moved from this area to Europe, and was based in Moesia. At the time of the Batavian rebellion the unit was sent to the present Dutch part of Germania Inferior to support the Roman troops.
In Roman Dacia, an estimated 50,000 troops were stationed at its height.
Osroene, also spelled Osrohene and Osrhoene, was a Roman province which existed for nearly 400 years. It was formed after the absorption of the Kingdom of Osroene in 214 CE and served as a frontier province against the Sassanid Empire until the Muslim conquests of the 7th century.
Ala Gallorum Petriana was a Roman auxiliary unit. It is attested by military diplomas and inscriptions: in one inscription it is referred to as Ala Augusta Petriana; in other inscriptions, Tacitus in his Histories, and in the Notitia dignitatum it is called Ala Petriana.
