After his victory over Maxentius the character of Constantine changed, and his subsequent proceedings often stand in opposition to the principles which he publicly acknowledged. He went over to Christianity, although in prudent fashion, not formally nor irrevocably, and for this the Christian priests permitted and forgave him everything. The miserable senate, which for a long time had ceased to be a governmental institution and to be consulted in affairs of state, declared him the first of the three emperors of the realm, and in this manner he passed naturally to the idea of undivided sway. Although he made the cross the imperial standard, he took part in the heathen sacrifices, allowed himself to consult soothsayers, and bore the title of a high priest of the old religion as before. Moreover he postponed the rite of baptism until his death-bed, that he might pass, according to the teaching of the priests at his court, into the next life washed clean from all sin.
From Rome Constantine went to Milan,[54] where he met Licinius and gave him his sister Constantia in marriage. Then he went to his province of Gaul, to repulse the German tribes which had again invaded the country; but Licinius hastened to meet the emperor Maximin, who was trying to wrest from him his share of the empire, and had already seized the towns of Byzantium and Heraclea, or Perinthus.
To the south of Hadrianopolis there was a decisive battle between the two emperors. Licinius won it, and tradition has also attributed his victory to a divine miracle, although the victor was in no way inclined towards Christianity. It is said that an angel appeared to Licinius and taught him a prayer, which on his awakening he immediately caused to be written out and distributed to the soldiers. This prayer was sung before the beginning of the battle and helped them to victory (313). Maximin fled; on the way he took poison, which brought on a severe illness of which he died after great tortures. With terrible harshness and cruelty Licinius proceeded against the relations and friends of Maximin. They were all put to death without mercy and the widow and daughter of Diocletian, as well as the sons of Galerius and Severus, perished as sacrifices to the wanton brutality of Licinius.[b]
STRUGGLE BETWEEN CONSTANTINE AND LICINIUS
[314 A.D.]
The Roman world was now divided between Constantine and Licinius, the former of whom was master of the West, and the latter of the East. It might perhaps have been expected that the conquerors, fatigued with civil war and connected by a private as well as a public alliance, would have renounced, or at least would have suspended, any further designs of ambition; and yet a year had scarcely elapsed after the death of Maximin, before the victorious emperors turned their arms against each other. The genius, the success, and the aspiring temper of Constantine may seem to mark him out as the aggressor; but the perfidious character of Licinius justifies the most unfavourable suspicions, and by the faint light which history reflects on this transaction, we may discover a conspiracy fomented by his arts against the authority of his colleague.[55]
Constantine had lately given his sister Anastasia in marriage to Bassianus, a man of a considerable family and fortune, and had elevated his new kinsman to the rank of cæsar. According to the system of government instituted by Diocletian, Italy and perhaps Africa were designed for his departments in the empire. But the performance of the promised favour was either attended with so much delay, or accompanied with so many unequal conditions, that the fidelity of Bassianus was alienated rather than secured by the honourable distinction which he had obtained. His nomination had been ratified by the consent of Licinius; and that artful prince, by the means of his emissaries, soon contrived to enter into a secret and dangerous correspondence with the new cæsar, to irritate his discontent, and to urge him to the rash enterprise of extorting by violence what he might in vain solicit from the justice of Constantine. But the vigilant emperor discovered the conspiracy before it was ripe for execution; and after solemnly renouncing the alliance of Bassianus, despoiled him of the purple, and inflicted the deserved punishment on his treason and ingratitude. The haughty refusal of Licinius, when he was required to deliver up the criminals who had taken refuge in his dominions, confirmed the suspicions already entertained of his perfidy; and the indignities offered at Æmona, on the frontiers of Italy, to the statues of Constantine, became the signal of discord between the two princes.
Arch of Constantine, Rome
The first battle was fought near Cibalis, a city of Pannonia, situated on the river Savus, about fifty miles from Sirmium. From the inconsiderable forces which in this important contest two such powerful monarchs brought into the field, it may be inferred that the one was suddenly provoked, and that the other was unexpectedly surprised. The emperor of the West had only twenty thousand, and the sovereign of the East no more than five-and-thirty thousand men. The inferiority of number was, however, compensated by the advantage of the ground. Constantine had taken post in a defile about half a mile in breadth, between a steep hill and a deep morass, and in that situation he steadily expected and repulsed the first attack of the enemy. He pursued his success, and advanced into the plain. But the veteran legions of Illyricum rallied under the standard of a leader who had been trained to arms in the school of Probus and Diocletian. The missile weapons on both sides were soon exhausted; the two armies, with equal valour, rushed to a closer engagement of swords and spears, and the doubtful contest had already lasted from the dawn of the day to a late hour of the evening, when the right wing, which Constantine led in person, made a vigorous and decisive charge. The judicious retreat of Licinius saved the remainder of his troops from a total defeat; but when he computed his loss, which amounted to more than twenty thousand men, he thought it unsafe to pass the night in the presence of an active and victorious enemy. Abandoning his camp and magazines, he marched away with secrecy and diligence at the head of the greatest part of his cavalry, and was soon removed beyond the danger of a pursuit. His diligence preserved his wife, his son, and his treasures, which he had deposited at Sirmium.[56] Licinius passed through that city, and breaking down the bridge on the Savus, hastened to collect a new army in Dacia and Thrace. In his flight he bestowed the precarious title of Cæsar on Valens, his general of the Illyrian frontier.[57]