who converted to christianity after winning a decisive battle
Battle of the Milvian Bridge According to chroniclers such as Eusebius of Caesarea and Lactantius, the battle marked the beginning of Constantine's conversion to Christianity. Eusebius of Caesarea recounts that Constantine and his soldiers had a vision sent by the Christian God. This was interpreted as a promise of victory if the sign of the Chi-Rho, the first two letters of Christ's name in Greek, was painted on the soldiers' shields. The Arch of Constantine, erected in celebration of the victory, certainly attributes Constantine's success to divine intervention; however, the monument does not display any overtly Christian symbolism.
History of early Christianity In the Ante-Nicene Period (literally before the First Council of Nicaea in 325), following the Apostolic Age, both incredible diversity and unifying characteristics lacking in the apostolic period emerged simultaneously.[citation needed] Part of the unifying trend was an increasingly harsh rejection of Judaism and of Jewish practices. By the beginning of the Nicene period, the Christian faith had spread throughout Western Europe and the Mediterranean Basin, and to North Africa and the East: see Early centers of Christianity. The Mediterranean Christianity journey consisted of 48 cities that St John visited to get the gentiles to join the Christian community.