The Rise and Fall of Sparta Following the Great Peloponnesian War (431-404 B.C.)

"Can someone explain to me how mighty Sparta was finally subdued?" 

(question posed by roland678, reddit.com; /r/history)

My humble response:

"After her victory in the Great Peloponnesian War (431-404 B.C.) against the Athenians and her allies, Sparta became the regional hegemon. Instead of remaining insular, as was her typical foreign policy orientation up to the war, Sparta exercised a more adventurous and aggressive posture towards the Peloponnese and greater Greece. Two major developments arrested Spartan aggrandizement: (1) Persian resistance and (2) the rise of Thebes.

Following the defeat of Athens in 404 B.C., the Spartans emerged as the leading Greek city-state and, led by Lysander, the Spartan hero-general of the Peloponnesian War, the Spartans acted to subdue the Greek world. In addition to her mainland aspirations, Sparta engaged in an risky foreign endeavor in the heartland of the Persian empire. Along with a host of other soldiers drawn from the Greek world, the Spartans supported the rebellion of the Persian satrap Cyrus who aimed to dethrone the new Persian king, Artaxerxes II, whose recent ascension in 404 B.C. purportedly offered to Cyrus and his Greek mercenaries an opportunity to grab absolute power. Such was not the case. This rebellion ended disastrously for Cyrus: he died. His hired Greek mercenary army faired no better. The Greek army suffered a total defeat in battle and were forced into a hasty retreat from ancient Babylon, the whole while victim to harrassment by Persian cavalry upon its flank and rear. These events were chronicled in detail by a Greek soldier, Xenophon, who was present during the initial campaign and pitiable conclusion (see:Anabasis). 

In spite of her overseas misfortunes, Sparta nonetheless continued to pursue an aggressive domestic policy vis. a v. her immediate Greek city-state neighbors. Accordingly, an anti-Spartan alliance was formed by a resurgent Athens -- supported financially and materially by, yes, the Persians -- Corinth, Argos (Sparta's historical and mortal enemy), and Thebes. These formerly self-interested city-states fought to free themselves from Sparta's hegemonic aspirations. Events culminated in the Corinthian War (395-386 B.C.), the conclusion of which saw the Spartans reaching an accommodation with the Persians who had supported the anti-Spartan alliance with financial and material support during the war. This accommodation, so called the King's Peace, guaranteed Persian control of the Greek city-states in Anatolia, on the one hand, and Spartan hegemony of the Greek mainland, on the other.

Following the Corinthian War, a formerly second-rate Boetian power, Thebes, rose to challenge Spartan aggression. Led by the statesmen and generals Epamanondas and Pelopidas, Thebes engaged in a warring struggle with Sparta. The two powers, and their respective allies, fought intermittently for a decade, but superior Theban generalship subdued the mighty Spartan army, poignantly so in two separately decisive land battles: the Battle of Leuctra (371 B.C.), and the Battle of Mantinea (362 B.C.). Thebes leveraged her victories by freeing the Spartan helots -- a subjugated class of local slaves who were both crucial for, and a threat to, the Spartan way of life --, thereafter establishing them as freemen somewhere on the Corinthian Gulf.

At this point, Spartan prestige and material dominance both depreciated. In hindsight, however, Theban ascendancy proved to be a Pyrrhic development: strong relative to her Greek neighbors, Thebes nonetheless exposed herself to the machinations of her menacing neighbor to the north, Macedon. In an ironic reversal of fortunes, Philip II of Macedon learned valuable lessons from the progressive military tactics pursued by the Thebans under Epamonondas. Philip coupled these tactics with a professional army and a deft foreign policy in order to ultimately subdue the Greek world.

Spartan dominance -- in-and-of-itself a short-lived reality -- stemmed from her overwhelming defeat of the Athenian empire during the Great Peloponnesian War. Instead of consolidating her dominant position in Greece, Sparta reoriented her foreign and domestic policies toward a more uncharacteristically aggressive position. Her example, and many more from historical records, have shown that expansion based upon hubris can have disastrous effects. Outright defeat overseas jolted the Spartan state. Her mainland posture elicited an immediate -- no less damaging -- and determined response from, inter alia, the Athenians, Argives, Thebans, and Persians. Spartan material power eroded after a period of inter-Greek warfare which, incidentally, paved the way for Macedonian hegemony."

Thanks to roland678 for piquing my interest in this intriguing period of antiquity. More to come on this topic, for sure, very soon. So stay tuned!

-Cato