Constantine's Dissimilation

There is no proof that constantine was openly advertising a direct connection with the christian god, which you think would be pretty unequivocal at this point. So maybe he just painted the shields of his body guard. Or maybe the shield painting never happened at all, and his army simply took the field behind a hastily cobbled together labarroom. This seems a bit cumbersome for the morning of a great battle. I am sure that constantine's religious dissimilation was good politics at the time, but it sure makes it hard to untangle what really happened and why. We need to turn our attention back to worldly events in order to fully set the stage for constantine's showdown with max