Probus

Probus rose through the legions and took the purple in 276, inheriting an empire besieged by barbarian incursions across nearly every frontier. He spent his reign marching from one border to the next, repelling Germanic tribes and shoring up defenses, eventually restoring Hadrian's old Rhine-Danube fortifications to protect the Agri Decumates. He forced the defeated to supply troops for resettlement in depopulated provinces, a pragmatic tribute that stabilized the interior. Though his power rested on the army, he made a show of deference to the Senate and dealt leniently with internal revolts when he could. In 282, while preparing for a campaign against Persia, his soldiers mutinied and killed him - his successor Carus would fight the war instead.