For the Emperor Caesar Flavius Constantine the Greatest, pious blessed Augustus, because by inspiration of divinity, in greatness of his mind, from a tyrant on one side and from every faction of all on the other side at once, with his army he avenged the republic with just arms, the Senate and Roman People (SPQR) dedicated this arch as a sign for his triumphs.—Dedicatory inscription, Arch of Constantine, Rome
The inscription at the top of the arch honors the emperor’s victory over Maxenti