 A Victory separates the accounts of two expeditions.The exact chronology of the events is disputed; however, the latest theory states that the expeditions against the Marcomanni and Quadi in the years 172 and 173 are in the lower half and the successes of the emperor over the Sarmatians in the years 174 and 175 in the upper half.One particular episode portrayed is historically attested in Roman propaganda – the so-called "rain miracle in the territory of the Quadi", in which a god, answering a prayer from the emperor, rescues Roman troops by a terrible storm, a miracle later claimed by the Christians for the Christian God.