Epidamnos was involved in the Peloponnesian War. During Roman times the name was changed to Dyrrachium. The war led to many political and architectural changes in the city. Trade with the Illyrians flourished during the ensuing years. Many Illyrian tombs were discovered in the city cemeteries, indicating that this period was characterized by a significant cultural exchange and that people were traveling freely between the regions. Dyrrachium was the battlefield between the legions of Caesar and Pompey during the Civil War of 49 - 48 BCE. As a result the city sustained many damages. In the year 30 BCE, Dyrrachium became a Roman colony and was named Colonia Iulia Augusta Dyrrachinorum.