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.
Early Christianity Early Christianity spread from city to city throughout the Hellenized Roman Empire and beyond into East Africa and South Asia. The Christian Apostles, said to have dispersed from Jerusalem, traveled extensively and established communities in major cities and regions throughout the Empire. Apostles (see Apostolic see) and other Christian soldiers, merchants, and preachers founded early church communities in northern Africa, Asia Minor, Armenia, Caucasian Albania, Arabia, Greece, and other places.[60][61][62][63] Over forty existed by the year 100,[61][62] many in Asia Minor, such as the seven churches of Asia. By the end of the 1st century, Christianity had spread to Greece and Italy, even India.