Солтүстік Англиядағы рим әскерінің басшысы

Commander of the Roman army in Northern England

Dux Britanniarum was a military post in Roman Britain, probably created by Emperor Diocletian or Constantine I during the late third or early fourth century. The Dux (literally, "(military) leader" was a senior officer in the late Roman army of the West in Britain. It is listed in the Notitia Dignitatum as being one of the three commands in Britain, along with the Comes Britanniarum and Count of the Saxon Shore. His responsibilities covered the area along Hadrian's Wall, including the surrounding areas to the Humber estuary in the southeast of today's Yorkshire, Cumbria and Northumberland to the mountains of the Southern Pennines. The headquarters were in the city of Eboracum (York). The purpose of this buffer zone was to preserve the economically important and prosperous southeast of the island from attacks by the Picts (tribes of what are now the Scottish lowlands) and against the Scots (Irish raiders).

The Dux Britanniarum was commander of the troops of the Northern Region, primarily along Hadrian's Wall. The position carried the rank of viri spectabiles, but was below that of the Comes Britanniarum. His responsibilities would have included protection of the frontier, maintenance of fortifications, and recruitment. Provisioning the troops would have played a significant part in the economy of the area. The Dux would have had considerable influence within his geographical jurisdiction, and exercised significant autonomy due in part to the distance from headquarters of his superiors. The Notitia Dignitatum lists the garrison along Hadrian's Wall (along with several sites on the coast of Cumbria) under the command of the Dux Britanniarum. Archaeological evidence shows that other units must have been stationed here, which are not, however, mentioned in the Notita. Most of them were established during the 3rd Century.

The Legio sexta is an ancient tribal legion of Britain, the Legio VI Eburacum (York). They seem to have had in late antiquity no fixed posting. One might expect that this legion (full name: Legio VI Victrix Pia Fidelis Britannica) at this time still to be stationed in Eburacum: this absence may indicate that the unit had been moved to another site when the list of the Dux Britanniarum was compiled in the Notita Dignitatum. ("Possibly is the VI."?) but also in connection with the non historically tangible primani iuniores in the army of the Comes Britanniarum. The men under the Praefectus Numbers Solensium could (per Arnold Hughes Martin Jones, 1986) be the descendants of another British unit, the Legio XX Valeria Victrix. This is the only legion no longer listed in the Notitia Dignitatum. The last epigraphic evidence of their presence in Britain is a mention on coins of the usurper Carausius, a century before the Notita Dignitatum was compiled.