For the protection of the Lower Danube territories against the continuous raids of the Barbarians from the North, after the victory over the Dacians in 106 AD, one of the most capable military units of the Roman Empire was stationed there by order of Emperor Trajan (97 – 117) – Legio XI Claudia. According to the prevailing opinion the name of the town of Durostorum is of a Thraco-Getic or Celtic origin (some translate it as strong fortress), which at least testifies to continuity in toponymy.