アエトリア同盟
Philip's alliance with Hannibal of Carthage in 215 BC also caused concern in Rome, then involved in the Second Punic War. In 211 BC, a treaty was signed between Rome and the Aetolian League, a provision of which allowed for the inclusion of certain allies of the League, Attalus being one of these. Attalus was elected one of the two "strategoi" (generals) of the Aetolian League, and in 210 BC his troops probably participated in capturing the island of Aegina, acquired by Attalus as his base of operations in Greece.