The ancient Greek city-state known for its military prowess is Sparta. Renowned for its disciplined and formidable army, Sparta's society revolved around military training and excellence. Spartan boys were taken from their families at a young age to enter the rigorous agoge system, where they underwent intense physical training and education in combat. The city's governance was unique, characterized by a dual monarchy and a council of elders. Sparta's military strength enabled it to dominate many of its rivals, especially during the Peloponnesian War against Athens, showcasing its influence in ancient Greek history and military strategy.