[BenLurkin]

I really doubt if I could find a primary source for that. Would be challenge just to find a secondary source.

[Cvengr]

Still has some old Quix posts.

[Trumpinator]

Speculation on my part——Constantine’s soldiers were already were predominately crypto Christians. Christ’s biggest selling point in the early Church was he conquered death. soldiers recruited from the east would have gravitated to that kind of religion. The story of St. Maurice (Maurice is Greek or Latin for black) and his Christian Egyptian legion comes to mind.