By 312, however, Constantine and Maxentius were engaged in open hostility
with one another, although they were brothers-in‑law through Constantine's
marriage to Fausta, sister of Maxentius.
In the spring of 312, Constantine gathered his forces and decided to oust
Maxentius himself. He easily overran northern Italy, winning two major battles:
the first near Turin, the second at Verona,
where the praetorian prefect Ruricius
Pompeianus,
Maxentius' most senior general, was
killed.
[3]