Key Facts
- Duration
- 50 years (499–449 BC)
- Total casualties (est.)
- ~300,000
- Persian invasions of Greece
- 2 (492 BC and 480 BC)
- Key Greek alliance
- Delian League, formed after 479 BC
- Concluded by
- Peace of Callias, 449 BC
Strategic Narrative Overview
Persia launched two major invasions of Greece. The first (492–490 BC) ended with Persian defeat at Marathon. The second (480–479 BC) under Xerxes saw the fall of Thermopylae and the burning of Athens, but Greek naval victory at Salamis and land victory at Plataea shattered the invasion. The Delian League then pressed the offensive, driving Persian forces from Europe and winning the Battle of the Eurymedon in 466 BC, freeing Ionian cities from Persian control.
01 / The Origins
Conflict rooted in Persia's conquest of Greek-inhabited Ionia in 547 BC under Cyrus the Great. Persian-appointed tyrants over Ionian cities bred resentment, erupting in the Ionian Revolt of 499 BC led by Aristagoras of Miletus. Athens and Eretria aided the rebels and helped burn the Persian regional capital of Sardis in 498 BC, prompting Darius the Great to vow retribution against the mainland Greek states and seek to extend Achaemenid dominion into Europe.
03 / The Outcome
Persian forces were expelled from Europe and the Aegean following defeats at Mycale, Sestos, and Byzantium. The Delian League, led by Athens, continued operations for decades until the Peace of Callias in 449 BC formally ended hostilities. Ionia and Macedon regained independence, Persia acknowledged Greek autonomy in the Aegean, and Athens emerged as the dominant Greek power, setting the stage for the classical age of Greek culture and democracy.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Darius the Great, Xerxes I, Mardonius.
Side B
2 belligerents
Themistocles, Leonidas I, Pausanias.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.