Demetrius II Aetolicus

Demetrius II launched a campaign against the Aetolian League but suffered a decisive defeat. This loss weakened Macedonian control over central Greece and emboldened the Aetolians, leading to further territorial losses.

Demetrius II died while fighting the Dardanians, a Illyrian tribe, in a border conflict. His death left Macedon without a clear successor, leading to a period of instability and the regency of Antigonus III Doson.