The Battle Hostile_encounter of Lysimachia was fought Hostile_encounter in 277 BC between the Gallic tribes settled in Thrace and a Greek army of Antigonus at Lysimachia , Thracian Chersonese .

Antigonus father , Demetrius Poliorcetes , had been driven Motion from the Macedonian throne by Pyrrhus of Epirus and Lysimachus in 288 BC .

Tired of war Demetrius surrendered Surrendering himself to Seleucus I Nicator in 285 BC , leaving Departing Antigonus as the Antigonid heir to the Macedonian throne .

In 277 BC Antigonus organized Arranging an expedition Traveling to take Macedon from Sosthenes of Macedon .

When an army of Gauls under the command Control of Cerethrius appeared Presence , Antigonus laid Giving an ambush Attack .

The Gauls looted Robbery the camp , but when they started Process_start to attack Attack the ships , Antigonus 's army appeared Presence , trapping them with the sea to their rear .

In this way , Antigonus was able to inflict Causation a crushing defeat on them and claim Statement the Macedonian throne .

He declared Expressing_publicly war on Antigonus Gonatas ( 283–239 BC ) of Macedon and in a rapid campaign , managed Preventing_or_letting to defeat him and make himself king of Macedon .

Whilst attempting to seize Arrest Argos by night , Pyrrhus was set upon Attack by his Argive opponents as well as the Spartans and Antigonus ' Macedonians .