I’ve redone some of the civ icons, with a lot of suggestions from @Mahazona, here are the results for the 6 I have right now:
Athenians:
Britons (Or maybe Gauls if you wanted to use this for the Gauls, and the Celt icon for the Britons:
Carthaginians:
Macedonians:
Phoenicians:
Thracians:
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