Ancient Roman Coins – Victory Over Parthia and the Lost Roman Standards
While fighting the Battle of Philippi, Octavian vowed to avenge the assassination of his adoptive father Julius Caesar. Octavian set plans in motion to build a temple honoring the god Mars Ultor (“Mars the Avenger”). Mars was the god of war, protector of Rome, and second only to Jupiter in importance. Caesar had stated earlier that he wished to build a temple honoring the god, but was assassinated before planning could begin.

With the help of Mark Antony and Lepidus, Octavian won the battle and upon assuming the title of Augustus, began planning for the temple to be built in the forum, stating that it would be “greater than any in existence”. This temple served a politically strategic purpose as well, further linking himself to the Roman people’s love for Julius Caesar by continuing and improving upon Caesar’s original concept. However, construction did not begin immediately due to an unstable political situation in the region.
While Rome had succeeded in conquering nearly the entire civilized Mediterranean world, they had never succeeded in conquering Parthia. The Parthian Empire was spread across Central Asia and posed a formidable challenge to Roman control.
Rome fought and lost to Parthia three times, the most devastating of which occurred in 53 BCE. During this battle, Crassus, the leader of the Roman army, was killed and humiliated, and the Roman standards of the Legions were taken by the Parthians.

Detail of the central breastplate relief on the statue of Augustus of Prima Porta shows the return of the aquilae, or “eagles” (Roman military standards) lost to the Parthians. The return of the eagles was one of Augustus’s notable diplomatic achievements.