The titanic struggle that was the Peloponnesian war saw the surrender of the most elite class of Spartans. At the battle of Sphacteria, the Spartans not only lost to a force of mostly light infantry, but they were forced into a shameful surrender that changed the dynamics of the war.
The Peloponnesian War between Athens and Sparta was a long war with multiple swings of momentum and a lot of switching sides. The Spartan strategy was simple: invade the Athenian territory of Attica, destroy farmland, and threaten Athens itself. It should have been a simple and effective tactic considering Sparta’s impressive soldiers. The Athenians had a strategy based off of their imposing navy that sent them all over Greece.