Britannia Inferior

[1] The removal of the governors in Londinium from control over the legions guarding Hadrian's Wall was aimed at reducing their power, given Clodius Albinus's recent bid to become emperor.

The peace of the region was further disturbed in the tumultuous period after Commodus' death as the military power vacuum on the continent distracted the defensive legions stationed in Britannia.

An African inscription dated to the reign of Caracalla provides a potential early confirmation of the division occurring under Severus.

[5] Caracalla also moved the southern border of the province northwards from the line established by Severus, transferring northern modern Wales and the region surrounding Chester to Britannia Superior.

[9] After the successes of Severus against the northern tribes, these troops furnished small units known as exploratores which were sent beyond the frontier to oversee native activities and ensure that the terms of Roman treaties with these groups were upheld.