Corinth, Thebes, Sparta.
Sparta and Athens vied for supremacy .
Elites in Halo: CE and the first half of Halo 2; Brutes for the second half of Halo 2 and all of Halo 3.
Sparta and Athens joined 20-odd other Greek city-states to oppose Persia. After that war,the Peloponnesian League led by Sparta fought the Peloponnesian War against the Athenian empire.
In ancient times, Sparta was the leading rival of Athens
In ancient Greece, notable city-states that fought against each other included Athens and Sparta, primarily during the Peloponnesian War (431-404 BCE). Other rival city-states included Corinth and Thebes, which also engaged in various conflicts over territory and influence. These city-states often formed shifting alliances, leading to a complex web of warfare and diplomacy throughout Greek history.
corinth
Corinth
Spartans
Spartans
No British counties fought against each other in ww1 England, Wales And Scotland All Fought Against The Germans/Austro-Hungarians In The First World War.
Athens and its allies and Sparta and its allies.
Yes