United Kingdom

After the emperor Domitian had reduced the garrison in about the year 90, three legions remained; their permanent bases were established at York, Chester, and Caerleon. The legions formed the foundation of Roman military power, but they were supplemented in garrison duty by numerous smaller auxiliary regiments both of cavalry and infantry, either 1,000 or 500 strong. These latter garrisoned the wall and were stationed in a network of other forts established for police work in Wales and northern England. With 15,000 legionaries and about 40,000 auxiliaries, the army of Britain was very powerful; its presence had economic as well as political results. Hadrian’s Wall was the most impressive frontier work in the Roman Empire. Despite a period in the following two reigns when another frontier was laid out on the Glasgow–Edinburgh line—the Antonine Wall, built of turf—the wall of Hadrian came to be the permanent frontier of Roman Britain. The northern tribes only twice succeeded in passing it, and then at moments when the garrison was fighting elsewhere. In the late Roman period, when sea raiding became prevalent, the wall lost its preeminence as a defense for the province, but it was continuously held until the end of the 4th century. But although they withdrew to Hadrian’s line not later than the year 180, the Romans never abandoned interest in southern Scotland. In the 2nd century their solution was military occupation. In the 3rd, after active campaigning (208–211) by the emperor Septimius Severus and his sons during which permanent bases were built on the east coast of Scotland, the solution adopted by the emperor Caracalla was regulation of relationship by treaties. These, perhaps supported by subsidies, were enforced by supervision of the whole Lowlands by patrols based on forts beyond the wall. During the 4th century more and more reliance was placed on friendly native states, and patrols were withdrawn.

Administration

Britain was an imperial province. The governor represented the emperor, exercising supreme military as well as civil jurisdiction. As commander of three legions he was a senior general of consular rank. From the late 1st century he was assisted on the legal side by a legatus juridicus. The finances were in the hands of the provincial procurator, an independent official of equestrian status whose staff supervised imperial domains and the revenues of mines in addition to normal taxation. In the early 3rd century Britain was divided into two provinces in order to reduce the power of its governor to rebel, as Albinus had done in 196: Britannia Superior had its capital at London and a consular governor in control of two legions and a few auxiliaries; Britannia Inferior, with its capital at York, was under a praetorian governor with one legion but many more auxiliaries.

Local administration was of varied character. First came the chartered towns. By the year 98 Lincoln and Gloucester had joined Camulodunum as coloniae, and by 237 York had become a fourth. Coloniae of Roman citizens enjoyed autonomy with a constitution based on that of republican Rome, and Roman citizens had various privileges before the law. It is likely that Verulamium was chartered as a Latin municipium (free town); in such a town the annual magistrates were rewarded with Roman citizenship. The remainder of the provincials ranked as peregrini (subjects). In military districts control was in the hands of fort prefects responsible to legionary commanders; but by the late 1st century local self-government, as already stated, was granted to civitates peregrinae, whose number tended to increase with time. These also had republican constitutions, being controlled by elected councils and annual magistrates and having responsibility for raising taxes and administering local justice. In the 1st century there were also client kingdoms whose rulers were allied to Rome; Cogidubnus, Verica’s successor, who had his capital at Chichester, is the best known. But Rome regarded these as temporary expedients, and none outlasted the Flavian Period (69–96).

Roman society