Britannia was among those provinces that scaled off the Roman Empire first. This region was the outermost province from Rome, the very heart of the greatest empire of the antiquity, which suffered from continuous barbarian attacks and raids from the first century. Rome, itself made the decision to withdraw her troops, to give up the military posts and consciously evacuated the province. Questions emerge immediately: why did the Romans abandon the province? How was it possible that the most powerful army of antiquity could not face the barbarian troops and simply repel their raids on the island? The barbarian incursions seriously damaged Roman settlements from the 360s, the villas of the countryside were imperishably ruined and emptied which led to the cultural break-down of the region (at least for the Romans).[...]This thesis was written to elucidate these matters and to give a short insight into life in late Roman Britain, and explain the problematic causes of Roman military presence and life on the most western border of the Roman Empire.