Eugenius (died 6 September 394) was a usurper in the Western Roman Empire (392–394) against Emperor Theodosius I. While Christian himself, Eugenius capitalized on the discontent in the West caused by Theodosius' religious policies targeting pagans. He renovated the pagan Temple of Venus and Roma and restored the Altar of Victory, after continued petitions from the Roman Senate. Eugenius replaced Theodosius' administrators with men loyal to him, including pagans. This revived the pagan cause. His army fought the army of Theodosius at the Battle of the Frigidus, where Eugenius was captured and executed. Life A Christian and former teacher of grammar and rhetoric, as well as magister scriniorum, Eugenius was an acquaintance of Arbogast, the magister militum. Arbogast was of Frankish origin and de facto ruler of the western portion of the Empire. Rise to power Following the death of Valentinian II, Eugenius was elevated to augustus on 22 August 392 at Lyons, by Arbogast. Deferring to Eugenius offered Arbogast two strong advantages: first, Eugenius, a Roman and Christian, was more suitable than Arbogast, a Frank and pagan, as an Augustus; furthermore, the Roman Senate would be more likely to support Eugenius. Civil, religious, and military policies After being installed as Emperor, Eugenius changed the imperial administrators. When Theodosius had left the western half of the empire to Valentinian II, he had put his own men in the highest civil offices, to keep a strong grasp on the whole empire. Eugenius replaced these administrators with others loyal to himself, coming from the senatorial class. Virius Nicomachus Flavianus the Elder became praetorian prefect, his son Nicomachus Flavianus the Younger received the title of praefectus urbi, while the new praefectus annonae was Numerius Proiectus. Though his actual beliefs are a matter of controversy among ancient and modern historians, Eugenius was at least publicly a Christian. Pagan senators convinced Eugenius to use public money to fund pagan projects, such as the rededication of the Temple of Venus and Roma and the restoration of the Altar of Victory within the Curia. Eugenius' appointment of Nicomachus Flavianus, a pagan, as Praetorian Prefect of Italy, revived the pagan cause. These religious policies created tension with pro-Christian figures, such as Emperor Theodosius and the powerful and influential Bishop Ambrose, who left his see in Milan when the imperial court of Eugenius arrived. Eugenius was also successful in the military field, notably in the renovation of old alliances