 After repelling the foreign enemies of the empire Probus was forced to handle several internal revolts, but demonstrated leniency and moderation to the vanquished wherever possible.In his reign the facade of the constitutional authority of the Roman Senate was fastidiously maintained, and the conqueror, who had carried his army to victory over the Rhine professed himself dependent on the sanction of the Senate.Upon defeating the Germans, Probus re-erected the ancient fortifications of emperor Hadrian between the Rhine and Danube rivers, protecting the Agri Decumates, and exacted from the vanquished a tribute of manpower to resettle depopulated provinces within the empire and provide for adequate defense of the frontiers.