A Persian-backed attempt led by Aristagoras of Miletus to seize Naxos fails after a prolonged siege. The debacle undermines Aristagoras’ position and becomes a key trigger for open rebellion against Achaemenid control in Ionia.
Greek cities in Ionia and neighboring regions rise against Achaemenid rule, deposing Persian-sponsored tyrants in several poleis. The revolt marks the opening phase of the wider Greco-Persian Wars.
Ionian forces, aided by Athens and Eretria, strike the Persian satrapal center at Sardis and burn parts of the city; during the withdrawal, Persian forces defeat the Greeks near Ephesus, contributing to the collapse of direct Athenian/Eretrian involvement.
A decisive Persian naval victory off Miletus shatters Ionian sea power. The defeat leaves the core rebel city-states exposed to siege and reconquest.
After Lade, Persian forces capture Miletus and progressively stamp out remaining resistance, restoring Achaemenid control over the rebellious regions by the end of the decade.
In the first phase of Persia’s punitive operations against mainland Greece, Mardonius reasserts Persian influence in Thrace and compels Macedon into closer subordination; the expedition is checked when the fleet suffers disaster near Mount Athos.
Persia seeks formal tokens of submission from Greek poleis; Athens and Sparta refuse, deepening the confrontation and setting the stage for a renewed Persian offensive.
A Persian amphibious force under Datis and Artaphernes crosses the Aegean and takes Eretria, an Athenian ally in the Ionian Revolt. The fall of Eretria is a major step in Persia’s punitive campaign before turning toward Athens.
Athenian and Plataean hoplites defeat the Persian landing force at Marathon, halting the immediate attempt to subdue Athens and becoming a landmark Greek victory in the first Persian invasion.
After years of preparation, Xerxes I mounts a massive invasion of Greece (480–479 BCE), bringing the conflict to a new scale and forcing broader Greek coalition planning on land and at sea.
Greek forces attempt a coordinated defense: a land stand at Thermopylae and parallel naval fighting at Artemisium. Despite eventual Persian success, the actions help buy time for Greek strategy and evacuations.
In the straits near Salamis, the allied Greek navy defeats a larger Persian fleet, compelling a strategic shift and contributing to Xerxes’ decision to withdraw much of his force from Greece.
Greek allied forces defeat Mardonius’ army at Plataea in mid-479 BCE, killing Mardonius and breaking the remaining Persian land threat to mainland Greece.
A Greek allied victory at Mycale destroys Persian positions and ships on the Anatolian coast and helps spark renewed Ionian revolt, accelerating the shift from defense to Greek counteroffensive.
Greek states form a new maritime alliance headquartered at Delos to continue operations against Persia and protect the Aegean. Athens provides leadership and increasingly directs strategy and resources.
Cimon leads a major Delian League success against Persian forces near the Eurymedon in Pamphylia, weakening Persian capacity to contest Greek naval power in the eastern Mediterranean (date traditionally placed in 469 or 466 BCE).
A widely cited (and historically debated) peace settlement is placed around 450/449 BCE, commonly associated with negotiations by Callias and treated by many later sources as marking the end of the Greco-Persian Wars between Athens (and its allies) and the Achaemenid Empire.
Greco-Persian Wars (499–449 BCE)