QUOTE(KLthinker91 @ Oct 17 2019, 04:30 PM)
Not really
We have very few sources. All of what we know about Thermopylae comes from Herodotus, and only a handful of other authors. That's not a lot of people.
Spartans were not "leisure class". They were almost full time soldiers, and trained harder and longer than the soldiers of other civilisations and other Greeks. This specialisation is the core of what gave them military dominance... but only on land.
Their wealth is more likely due to being more successful in wars and thus having more political power to dictate reparations and dominate trade. (Much like any superpower.) However the Spartan system - or rather, what we know of it, see again point 1 about few sources - is quite extreme and unsustainable, leading eventually to their downfall.
Actually ancient Greek warfare between city-states was not harsh and more ritualistic, moreso than many other ancient and medieval wars. The Greeks had a certain sense of brotherhood amongst the warring city-states. Once there was a clear winner, they would allow the defeated army to retreat, and then dictate terms. On the losing side, they generally expected to honour the terms and accept the defeat, even if only temporarily.
Last stands to the death were remarkable enough that certain states including the Spartans were noted for it, but weren't common.
Thermopylae in a way marked the turning point from this kind of "frenemy" warfare because they were fighting an existential threat for the first time. After that war became more brutal, and tactics changed accordingly.
This is very much the popular culture depiction of Spartans.
For one thing, many other later historians studied Spartan history and culture starting from Roman times up to the 19th century. So it was better well known than most other Greek city-states. These historians regard Sparta as the perfect embodiment of civilization, a militarily strong and independent state. Sparta was the subject of fascination in its own day, as well as in Western culture following the revival of classical learning. There is even a term for this: "Laconism" or "Laconophilia".
Secondly, there was no such thing as 'full time soldiers' during the period. Sparta, as of all of Greece, relied on a civilian militia as a military force. However due to certain factors Sparta was able to gain an early advantage over other city-states.
1) The caste system practiced by Sparta in which citizen Spartans are forbidden to engage in commerce or manual labor created a large 'leisure class' which had free time to pursue its own aims, without having be occupied by long work hours. However Spartans still managed the city and did administrative jobs, working as clerks, civil servants and magistrates. This also made them able to coherently train themselves in warfare compared to other city-states, where the citizen hoplites were usually drawn from all classes and had practically no formal military training. The freedom from work also gave the Spartan citizen Hoplites the ability to campaign nearly all-year round, while other city-states needed to disband their forces each harvest season or risk economic disaster from unharvested crops. This is a huge advantage.
2) Sparta had a large number of citizens able to be equipped as Hoplites due to all citizens being a leisure class. During its peak in around 500 bc, Sparta could field around 8,000 citizen Hoplites from a population of around 50,000. Although Athens may have a population of around 500,000-600,000 at the same period, the majority of the population are not citizens and full Athenian citizens only numbered around 5,000. It should be noted that in Ancient Greece, only full citizens have the privilege to serve as Hoplites. Again, this combined with the fact that without the obligation to disband the Spartan army for harvest season and able to campaign all year round gave the Spartans a huge advantage in conflict against its rivals.
However, the Spartan caste system eventually precipitated the Spartan's decline downfall.
1) Only the families and descendents of the original founders of Sparta can be a Spartan citizen, and thus a Spartan Hoplite. The rigid military training caused Spartan citizens to marry late (men could only marry from the age of 30) and have few children, keeping the population low. There are also many laws that could demote a Spartan citizen into a lower class resident, such as if a citizen is unable to pay their contribution to their own barrack's mess. However, to keep lower class Perekoi and Helots from gaining citizenship, there are virtually no laws that could reinstate a demoted citizen, so a demotion is usually permanent for a citizen.
2) Spartan citizens, as leisure-class landowners, made their wealth through their lands. A citizen is entitled to 50% of the profits from the Perikoi and Helot working a citizen's own lands. In the early period, where everyone had a decently-sized land, they made a lot of wealth that afforded better equipment and armor. However, as time went by these plots of lands keep getting fragmented by splitting it to a citizen's sons when he died (daughters don't get inheritance). Thus the income of the land to each landowner keeps fragmenting and shrinking with each generation. Thus Sparta became poorer with each generation.
3) Many of the Spartans' militaristic culture is derived from the need to oppress the Helot class and prevent a Helot uprising. The helots are state-owned serfs that worked a Spartan citizens' land permanently. However, due the low population numbers of Spartan citizens, the number of Helots keep growing as they had no restrictions of family life compared to the citizens. In time, the imbalance of citizens and Helots grew to a dangerous degree and revolts became much more common.