The spiral picture relief tells the story of Marcus Aurelius' Danubian or Marcomannic wars, waged by him from 166 to his death. The story begins with the army crossing the river Danube, probably at Carnuntum. 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.