311: Death of Galerius. Licinius, Maximinus Daia and Constantine are candidates for succession. Alliance between Licinius and Constantine against Maximinus Daia and Maxentius
312: Constantine and Licinius issue the Edict of Milan, offering religious freedom to the citizens of the empire, especially the Christians
312-314: Stability between Constantine and Licinius
314, early summer: Licinius orders the destruction of all the statues of Constantine in the city of Aemona at the western frontier of his dominion. Constantine views the destruction as casus belli
314, October 8: Battle between Licinius and Constantine at Cibalis, at the valley of Sarros. Licinius retreats from the Balkans
320: Anti-christian action by Licinius forces Constantine to stage a coup.
320-322: Both sides organise their land and naval forces
323, July 3: Battle between Licinius and Constantine at Hadrianople. Licinius is defeated and returns to Byzantium
323, end of summer: Naval battle at the Sea of Marmara. Licinius' fleet, under the command of Avantus, is crushed by Constantine's fleet which is under the command of his son, Crispus
323, September 18: Victory of Constantine over Licinius at Chrysoupolis. Licinius flees to Nicomedeia
323, early October: Licinius surrenders and is exiled to Thessaloniki