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550 BCE - 366 BCE: Peloponnesian League alliance between Sparta, Corinth, Elis and Tegea which establishes Spartan hegemony over the Peloponnese.
478 BCE - 454 BCE: The treasury of the Delian League is kept on Delos until its removal to Athens.
470 BCE - 469 BCE: Attempted secession of Naxos from the Delian League. It is defeated and enslaved.
460 BCE - 445 BCE: First Peloponnesian War.
458 BCE: A treaty of cooperation is signed between the Sicilian city-state of Segesta and Athens.
457 BCE: Sparta wins the battle of Tanagra during the 1st Peloponnesian War with Athens.
454 BCE: The Athenians move the treasury of the Delian League from Delos to Athens.
451 BCE: Thirty years peace between Argos and Sparta.
446 BCE - 445 BCE: Thirty years peace between Athens and Peloponnesians.
432 BCE: Sparta declares that Athens has broken the Thirty Year Peace and prepares for war.
431 BCE: Athens invades Megara.
431 BCE - 404 BCE: The Cycladic city states side with Athens in the Peloponnesian war against Sparta and her allies.
431 BCE - 404 BCE: Thebes sides with Sparta against Athens in the Peloponnesian War.
431 BCE - 404 BCE: The 2nd Peloponnesian War between Athens and Sparta (the Delian League and the Peloponnesian League) which involved all of Greece.
429 BCE: Following attacks by Sparta, fortifications at the port of Piraeus are extended to reduce the width of the harbour entrances.
429 BCE: Peloponnesian forces led by Sparta begin the siege of Plataea.
429 BCE: The death of Pericles from the plague.
429 BCE: Athens successfully campaigns in the Corinthian Gulf regions during the Peloponnesian War.
427 BCE: Plataea finally falls to the Spartans after a two year siege.
425 BCE: Athenian and Corinthian hoplites fight a street battle in the suburbs of Solygeia.
425 BCE: Pylos campaign, under Cleon and Demosthenes' command Athens defeats Sparta at Pylos.
424 BCE: The Athenian expeditions against Megara and Boeotia are a failure with a particularly heavy defeat near Delion.
424 BCE: A force of Athenian peltasts defeat Spartan hoplites on Sphaktria in the Peloponnese.
424 BCE - 420 BCE: The Nike of Paionios is erected at Olympia to commemorate the Messenian and Naupaktian victory over Sparta at the battle of Sphakteria.
423 BCE: A one year truce in the Peloponnesian War.
422 BCE: Spartan general Brasidas employs Myrkinian and Chalkidian peltasts to defeat a force of Athenian hoplites at Amphipolis.
421 BCE: Spartan soldiers return from campaigning Thrace, some as Neodamodeis.
421 BCE: Peace of Nicias, a truce between the Delian and Peloponnesian Leagues.
418 BCE: Sparta, led by Agis II, defeats Argos and her allies at the battle of Mantinaea.
417 BCE - 415 BCE: Melos, after supporting Sparta in the Peloponnesian War, is attacked by Athens.
415 BCE: Alcibiades persuades the Athenian assembly to send a military expedition to Sicily.
415 BCE - 413 BCE: Athenian expedition to attack Syracuse.
413 BCE: On the advice of Alcibiades the Spartans take over the Athenian-held fort of Dekeleia.
413 BCE: The Athenian expedition in Sicily ends in disastrous defeat and the Athenian generals Nicias and Demosthenes are executed.
412 BCE: Rhodes revolts against Athens and supports Sparta in the Peloponnesian War.
412 BCE: Sparta allies with Persia.
410 BCE: Alcibiades leads the Athenian fleet to victory over Sparta at Cyzicus.
408 BCE: Lysander is first made an admiral of the Spartan fleet.
407 BCE: The Athenian fleet is defeated by Lysander of Sparta at Notium.
407 BCE: Alcibiades returns to Athens in triumph and is made strategos autokrater.
404 BCE: Spartan general Lysander attacks the Athenian port of Piraeus destroying parts of the Long Wall fortifications.
404 BCE: End of the Peloponnesian war, Athens defeated By Sparta at Aigospotamoi, Rule of the Thirty Tyrants in Athens.