Res Gestae

Now, although this emperor in foreign wars met with loss and disaster, yet he was elated by his success in civil conflicts and drenched with awful gore from the internal wounds of the state. It was on this unworthy rather than just or usual ground[*](It was usual to celebrate a triumph only over foreign enemies, and the same rule applied to triumphal arches.) that in Gaul and Pannonia he erected triumphal arches[*](Although this term is so common in English, this is the first and only occurrence in Latin literature, and it is found besides only in four late inscriptions from northern Africa.) at great expense commemorating the ruin of the provinces,[*](That is, his victories over his rivals, and the bloodshed and ruin attending them.) and added records of his deeds, that men might read of him so long as those monuments could last.