What legend is told about Constantine 1?

Constantine I, also known as Constantine the Great, is often associated with the legend of his vision before the Battle of Milvian Bridge in 312 AD. According to the account, he saw a cross of light in the sky along with the Words "In this sign, conquer." Inspired by this vision, he adopted the Christian symbol as his standard, leading to his victory and subsequent promotion of Christianity within the Roman Empire. This event is frequently cited as a pivotal moment in the spread of Christianity in Europe.