Constans was not ill-disposed, and for some years ruled well and firmly. Afterwards--it may be that his health was bad--he lived in seclusion with his Frankish guards, and left his subjects to the oppression of unworthy favourites. Few regretted their weak master's fate when the army of Gaul proclaimed Magnentius Augustus (January 350). But the memory of Constantine was still a power which could set up emperors and pull them down. The old general Vetranio at Sirmium received the purple from Constantine's daughter, and Nepotianus claimed it at Rome as Constantine's nephew. The Magnentian generals scattered the gladiators of Nepotianus, and disgraced their easy victory with slaughter and proscription. The ancient mother of the nations never forgave the intruder who had disturbed her queenly rest with civil war and filled her streets with bloodshed. Meantime Constantius came up from Syria, won over the legions of Illyricum, reduced Vetranio to a peaceful abdication, and pushed on with augmented forces towards the Julian Alps, there to decide the strife between Magnentius and the house of Constantine. Both parties tried the resources of intrigue; but while Constantius won over the Frank Silvanus from the Western camp, the envoys of Magnentius, who sounded Athanasius, gained nothing from the wary Greek. The decisive battle was fought near Mursa, on the Save (September 28, 351). Both armies well sustained the honour of the Roman name, and it was only after a frightful slaughter that the usurper was thrown back on Aquileia. Next summer he was forced to evacuate Italy, and in 353 his destruction was completed by a defeat in the Cottian Alps. Magnentius fell upon his sword, and Constantius remained the master of the world. [Sidenote: Renewal of the contest.] The Eusebians were not slow to take advantage of the confusion. The fires of controversy in the East were smouldering through the years of rest, so that it was no hard task to make them blaze afresh. As the recall of the exiles was only due to Western pressure, the death of Constans cleared the way for further operations. Marcellus and Photinus were again deposed by a council held at Sirmium in 351. Ancyra was restored to Basil, Sirmium given to Germinius of Cyzicus. Other Eastern bishops were also expelled, but there was no thought of disturbing Athanasius for the present. Constantius more than once repeated to him his promise of protection. [Sidenote: The Western bishops.]