By adopting the cross as a symbol on the banners of his army, and having a transverse letter "X" (a Greek Chi) marked on the shields of his soldiers, Constantine hoped to establish unity among his troops. The apostate and/or worldly Christians would think they were fighting for the cross of Christ; the pagans had already been fighting for years under a standard bearing a mithraic cross of light.1 The ploy worked and the battle at Milvian Bridge was won on 28 October, 312 A.D.
Eusebius, a great historian who wrote a history of the early church, was also an Arian - a unregenerate religious man and a friend of Arius. Under great pressure from the orthodox Bishops at the Council, Constantine and Euseibus "took a more conciliatory view" concerning the deity of the Lord Jesus Christ. In other words, they would no longer go all the way to Arianism, but they would not completely deny it either. But this simply cannot be done with Jesus. One cannot take a "conciliatory point of view" about the deity of Christ. The fundamental issue in whether one is actually a Christian or not is "Who is Jesus to you?" If a person does not believe unto the committing of his life that Jesus is God the creator (Jehovah) come in the flesh, that He died for the sins of the world and was raised from the dead on the third day to make the final blood atonement for mankind's sins, that person is not a Christian. That is the Biblical definition of a Christian. It is not someone who has been merely water baptized, confirmed, or has his name on the membership roll.
Arius did not relent and was banished. However, two years later Constantine allowed him to return. Constantine and Eusebius, like Arius, did not hold to the doctrine of "Consubstantiation" - that Jesus and God the Father were of one essence. Constantine had become not only the Emperor of the Roman Empire but, in effect, a Pope. As such, it was his duty and privilege to appoint all bishops, archbishops, etc., within the Church. From the human standpoint, the organized church had come completely under the authority of the Roman government. His son, Constantius II, inherited that power when he became Emperor. Like his father, Constantius was Arian (his brother Constans was orthodox) and all the bishops appointed by him were Arian in doctrine. As a consequence, for the next three hundred years every bishop in the Roman Catholic Church was Arian.2
2 E.H. Broadbent, The Pilgrim Church, (London: Pickering & Inglis, 1931), pp. 21-22.
3 Ira M. Price, The Ancestry of our English Bible, 2nd ed., rev., (New York: Harper and Bros., 1949), p. 79.