Possible Clues:

• City-state's scrap in Athens ends upset
• Reservists joining fight for old city (6!
• Peloponnesian city-state that warred with Athens
• Soldiers joining fight in ancient city
• Menelaus' kingdom
• Ancient city in southern Peloponnese
• Noted ancient Greek city
• Creative work found in resort in Ancient Greece
• Separate in African country for old city-state
• Athens' rival of yore