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
Battle of Himera (480 BC) aid to avenge the death of Dorieus was ignored by mainland Greece, even by Leonidas of Sparta, brother of Dorieus and who later would win immortal fame at Thermopylae in 480 BC. This possibly demonstrated the futility of opposing Carthage by single Greek cities or the unreliability of aid from mainland Greece, a situation that would change with the rise of the Greek tyrants in Sicily. While Carthage remained engaged in Sardinia after 510 BC, most of the Greek colonies in Sicily fell under the rule of tyrants. The tyrants of Gela, Akragas and Rhegion successfully expanded their dominion at