Greco-Persian Wars

The Greco-Persian Wars (also often called the Persian Wars) were a series of conflicts between the Achaemenid Empire and Greek city-states that started in 499 BC and lasted until 449 BC. The collision between the fractious political world of the Greeks and the enormous empire of the Persians began when Cyrus the Great conquered the Greek-inhabited region of Ionia in 547 BC. Struggling to control the independent-minded cities of Ionia, the Persians appointed tyrants to rule each of them. This would prove to be the source of much trouble for the Greeks and Persians alike.

In 499 BC, the tyrant of Miletus, Aristagoras, embarked on an expedition to conquer the island of Naxos, with Persian support; however, the expedition was a debacle and, preempting his dismissal, Aristagoras incited all of Hellenic Asia Minor into rebellion against the Persians. This was the beginning of the Ionian Revolt, which would last until 493 BC, progressively drawing more regions of Asia Minor into the conflict. Aristagoras secured military support from Athens and Eretria, and in 498 BC these forces helped to capture and burn the Persian regional capital of Sardis. The Persian king Darius the Great vowed to have revenge on Athens and Eretria for this act. The revolt continued, with the two sides effectively stalemated throughout 497–495 BC. In 494 BC, the Persians regrouped and attacked the epicenter of the revolt in Miletus. At the Battle of Lade, the Ionians suffered a decisive defeat, and the rebellion collapsed, with the final embers being stamped out the following year.

Seeking to secure his empire from further revolts and from the interference of the mainland Greeks, Darius embarked on a scheme to conquer Greece and to punish Athens and Eretria for the burning of Sardis. The first Persian invasion of Greece began in 492 BC, with the Persian general Mardonius successfully re-subjugating Thrace and Macedon before several mishaps forced an early end to the rest of the campaign. In 490 BC a second force was sent to Greece, this time across the Aegean Sea, under the command of Datis and Artaphernes. This expedition subjugated the Cyclades, before besieging, capturing and razing Eretria. However, while en route to attack Athens, the Persian force was decisively defeated by the Athenians at the Battle of Marathon, ending Persian efforts for the time being.

Darius then began to plan to completely conquer Greece but died in 486 BC and responsibility for the conquest passed to his son Xerxes. In 480 BC, Xerxes personally led the second Persian invasion of Greece with one of the largest ancient armies ever assembled. Victory over the allied Greek states at the famous Battle of Thermopylae allowed the Persians to torch an evacuated Athens and overrun most of Greece. However, while seeking to destroy the combined Greek fleet, the Persians suffered a severe defeat at the Battle of Salamis. The following year, the confederated Greeks went on the offensive, decisively defeating the Persian army at the Battle of Plataea, and ending the invasion of Greece by the Achaemenid Empire.

The allied Greeks followed up their success by destroying the rest of the Persian fleet at the Battle of Mycale, before expelling Persian garrisons from Sestos (479 BC) and Byzantium (478 BC). Following the Persian withdrawal from Europe and the Greek victory at Mycale, Macedon and the city-states of Ionia regained their independence. The actions of the general Pausanias at the siege of Byzantium alienated a number of the Greek states from the Spartans, and the anti-Persian alliance was therefore reconstituted around Athenian leadership, called the Delian League. The Delian League continued to campaign against Persia for the next three decades, beginning with the expulsion of the remaining Persian garrisons from Europe. At the Battle of the Eurymedon in 466 BC, the League won a double victory that finally secured freedom for the cities of Ionia. However, the League's involvement in the Egyptian revolt by Inaros II against Artaxerxes I (from 460–454 BC) resulted in a disastrous Greek defeat, and further campaigning was suspended. A Greek fleet was sent to Cyprus in 451 BC, but achieved little, and, when it withdrew, the Greco-Persian Wars drew to a quiet end. Some historical sources suggest the end of hostilities was marked by a peace treaty between Athens and Persia, the Peace of Callias.

All the surviving primary sources for the Greco-Persian Wars are Greek; no contemporary accounts survive in other languages. By far the most important source is the fifth-century Greek historian Herodotus. Herodotus, who has been called the "Father of History", was born in 484 BC in Halicarnassus, Asia Minor (then part of the Persian empire). He wrote his 'Enquiries' (Greek Historia, English (The) Histories) around 440–430 BC, trying to trace the origins of the Greco-Persian Wars, which would still have been recent history. Herodotus's approach was novel and, at least in Western society, he invented 'history' as a discipline. As historian Tom Holland has it, "For the first time, a chronicler set himself to trace the origins of a conflict not to a past so remote so as to be utterly fabulous, nor to the whims and wishes of some god, nor to a people's claim to manifest destiny, but rather explanations he could verify personally."

Some later ancient historians, starting with Thucydides, criticized Herodotus and his methods. Nevertheless, Thucydides chose to begin his history where Herodotus left off (at the siege of Sestos) and felt Herodotus's history was accurate enough not to need re-writing or correcting. Plutarch criticised Herodotus in his essay "On The Malignity of Herodotus", describing Herodotus as "Philobarbaros" (barbarian-lover) for not being pro-Greek enough, which suggests that Herodotus might actually have done a reasonable job of being even-handed. A negative view of Herodotus was passed on to Renaissance Europe, though he remained widely read. However, since the 19th century, his reputation has been dramatically rehabilitated by archaeological finds that have repeatedly confirmed his version of events. The prevailing modern view is that Herodotus did a remarkable job in his Historia, but that some of his specific details (particularly troop numbers and dates) should be viewed with skepticism. Nevertheless, there are still some historians who believe Herodotus made up much of his story.

The military history of Greece between the end of the second Persian invasion of Greece and the Peloponnesian War (479–431 BC) is not well supported by surviving ancient sources. This period, sometimes referred to as the pentekontaetia (πεντηκονταετία, the Fifty Years) by ancient writers, was a period of relative peace and prosperity within Greece. The richest source for the period, and also the most contemporaneous, is Thucydides' History of the Peloponnesian War, which is generally considered by modern historians to be a reliable primary account. Thucydides only mentions this period in a digression on the growth of Athenian power in the run up to the Peloponnesian War, and the account is brief, probably selective and lacks any dates. Nevertheless, Thucydides's account can be, and is, used by historians to draw up a skeleton chronology for the period, on to which details from archaeological records and other writers can be superimposed.