The Spartans (documentary) the Spartan constitution into the militarised state we know of today. Homosexuality among men and boys was mandatory. The training of Spartan youths is explained, from their enrollment in the Agoge system right through to their attainment of citizenship. The class structure of the Lacedaemonian state (Helots, Perioeci, and the soldier-citizens themselves) is also covered. The episode ends with the battle of Thermopylae, in which 300 Spartans, including their king, Leonidas, were killed in action defending Greece from a Persian invasion. Part 2 opens with the retreat of the Persians, after Thermopylae and the battle of Salamis. Athens, which had
Ancient Corinth ships coming from Athens, Ionia, Cyprus and the Levant. Both ports had docks for the city's large navy. In 491 BC, Corinth mediated between Syracuse and Gela in Sicily. During the years 481–480 BC, the Conference at the Isthmus of Corinth (following conferences at Sparta) established the Hellenic League, which allied under the Spartans to fight the war against Persia. The city was a major participant in the Persian Wars, sending 400 soldiers to defend Thermopylae and supplying forty warships for the Battle of Salamis under Adeimantos and 5,000 hoplites with their characteristic Corinthian helmets) in the following Battle of