In Ancient Roman art the most elaborate Roman triumphal columns showed very long reliefs of military campaigns winding round the body of huge columns; among the most impressive are those of Trajan and Marcus Aurelius in Rome. The Alexander Mosaic is a large and dramatic battle scene showing Alexander the Great defeating Darius III of Persia; it is a floor mosaic excavated from Pompeii, probably copying a lost painting. Many Hellenistic and Roman sarcophagi showed crowded scenes of combat, sometimes mythological (an amazonomachy is a term for a scene of battle between Amazons and Greeks), and usually not relating to a particular battle; these were not necessarily used to bury people with military experience. Such scenes had a great influence on Renaissance battle scenes. By the Late Roman Empire the reverse of coins very often showed soldiers and carried an inscription praising 'our boys', no doubt in hope of delaying the next military revolt.