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282 BC

The expert siege engineer Dionysius of Alexandria inventor of polybolos(repeating ballista) together with engineers from Syracuse were invited to Massalia to work in the new arsenal and expand the military knowledge in the field of siege weapons. Highly advance torsion ballistas and lithobolos catapults were build both for the tagmata and for the defence of cities. Most importantly a new model of polybolos ballista developed. Rome asks for help in the coming war against King Pyrrhus of Epirus,Taranto and their allies. Massaliot League assembly declines the request, not wanting to fight fellow Greeks. The tagma under strategos Alkaios return to Massalia.

• An envoy is send to Alexandria to acquire book copies for the library of the museum of Massalia.
• A new trade hub builded in Garrone river by dynatoi.
• A new expedition starts from Garrone river with the mission to reach Atlantic ocean and establish a trade hub colony.

By place
Asia Minor

• The city of Pergamum in Asia Minor ends its allegiance to Lysimachus. Its ruler, Philetaerus, transfers his allegiance, as well as the important fortress of Pergamon and his treasury, to Seleucus, who allows him a far larger measure of independence than he had hitherto enjoyed.

Roman Republic

• The Battle of Populonia is fought between Rome and the Etruscans. The Romans are victorious and, as a result, the Etruscan threat to Rome is sharply diminished.
• The Magna Graecia city of Thurii appeals to Rome for help against the native Italian tribes. Though the Roman Senate hesitates, the plebeian Assembly decides to respond. Thurii is saved, but Tarentum, jealous of Rome's interference, attacks and sinks some Roman ships entering its harbour. Roman envoys, sent to protest, are mistreated.
• Rome declares war on Tarentum. King Pyrrhus of Epirus declares his willingness to come to the aid of Tarentum. Tarentum also looks for support from the Samnites and other Italian tribes in southern Italy.