The ancient Greek city-state known for its military prowess and discipline is Sparta. Renowned for its rigorous training and education system called the agoge, Sparta emphasized physical fitness, obedience, and martial skills, producing skilled warriors from a young age. Spartan society was unique in its focus on communal living and militarism, where the elite class, known as Spartiates, dominated governance and land ownership. Their fierce military culture was crucial in defeating their rivals, notably Athens, during the Peloponnesian War. Sparta's contributions to military strategy and discipline continue to be studied and admired in contemporary discussions about warfare and leadership.