The Battle of Andros shifted control of the Nesiotic League from Egypt to Macedon, reshaping Aegean naval dominance in the Hellenistic period.
Key Facts
- Approximate date
- 246/245 BC
- Conflict context
- Third Syrian War
- Egyptian commander
- Sophron of Ephesus (probable)
- Macedonian commander
- Antigonus II Gonatas
- Notable Egyptian casualty
- Ptolemy Andromachou lost his ship and crew
- Outcome for Egypt
- Lost dominion of the Nesiotic League
Location
Cause → Event → Consequence
During the Third Syrian War, Egypt under Ptolemy III Euergetes maintained a strong naval presence in the Aegean, including control of the Nesiotic League. Macedon under Antigonus II Gonatas sought to challenge Egyptian naval supremacy in the region, leading to a confrontation near the island of Andros around 246/245 BC.
Despite holding numerical superiority, the Egyptian fleet—probably commanded by Sophron of Ephesus—was defeated by the Macedonian fleet under Antigonus II Gonatas. The Egyptian captain Ptolemy Andromachou, an illegitimate half-brother of Pharaoh Ptolemy III, lost his ship and crew and barely escaped to Ephesus.
Following the Macedonian victory, Ptolemy III lost control of the Nesiotic League to Antigonus II Gonatas, marking a significant reduction in Egyptian influence over the Cyclades and broader Aegean Sea and consolidating Macedonian naval power in the region.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Antigonus II Gonatas.
Side B
1 belligerent
Sophron of Ephesus, Ptolemy Andromachou.