The Iliad Summary: Homer's Epic of the Wrath of Achilles

The Iliad is the ancient Greek epic poem attributed to Homer, composed around the 8th century BC and divided into 24 books (roughly 15,700 lines). Despite its reputation, it does not tell the story of the whole Trojan War. It covers about fifty days in the war’s tenth year, and its subject is announced in its very first word, mēnin, “wrath”: the anger of Achilles. Insulted by Agamemnon, he refuses to fight, loses his companion Patroclus, kills Hector in revenge, and finally gives the body back to Hector’s father, Priam. The title comes from Ilion, the other Greek name for Troy.

Why the poem starts in the middle

The Iliad takes everything before it for granted: the Judgement of Paris, the abduction of Helen, the fleet gathering at Aulis, nine years of siege. Homer barely mentions any of it. He chooses a short episode and makes it stand for the entire war. Aristotle already admired the choice: in the Poetics (ch. 23) he praises Homer for not trying to tell the war from beginning to end, a subject “too large to be taken in at one view.”

Earlier events come back as echoes. The Catalogue of Ships recalls the expedition; Helen on the walls of Troy recalls the elopement. Later events are foreshadowed again and again: Achilles’ early death, and the fall of a city everyone knows is doomed. The poem sits between a past and a future the audience knew well, and shows neither.

Book 1: the quarrel

It begins with a father. Chryses, a priest of Apollo, comes to the Greek camp to ransom his daughter Chryseis, Agamemnon’s captive. The king drives him away with threats. Chryses prays, and Apollo comes down from Olympus “like the night,” shooting arrows into the camp for nine days: first the mules and dogs, then the men.

On the tenth day Achilles calls an assembly. The seer Calchas names the cause. Agamemnon agrees to give Chryseis back, but demands compensation and takes Achilles’ own prize, Briseis. To a Homeric warrior this is an attack on his timē, the honor measured by his public share of the spoils. Achilles reaches for his sword; Athena, visible to him alone, catches him by the hair. He swears instead that the Greeks will one day miss him.

Alone by the shore, Achilles calls his mother, the sea goddess Thetis. She goes to Olympus and clasps the knees and chin of Zeus, the ritual gesture of a suppliant, and asks him to give the Trojans the upper hand until the Greeks honor her son. Zeus nods, and Olympus shakes. This “plan of Zeus” drives the rest of the poem.

Books 2-7: the war without Achilles

Zeus sends Agamemnon a lying dream promising victory. The king tests the army by proposing to sail home, and the men stampede to the ships; only Odysseus turns them back, beating the mocking Thersites with a scepter. Then comes the Catalogue of Ships, a long roll call of Greek contingents that preserves an old map of the Greek world.

In Book 3, Paris and Menelaus fight a duel for Helen, while Helen, from the walls, points out the Greek leaders to Priam. Menelaus is winning when Aphrodite snatches Paris away in a mist and sets him down in his bedroom. In Book 4, the Trojan archer Pandarus, egged on by Athena, wounds Menelaus and breaks the truce.

Book 5 is the aristeia, the shining moment, of Diomedes. Backed by Athena, he wounds Aphrodite in the hand and then Ares himself, who flees bellowing to Olympus. In Book 6 Diomedes meets the Lycian Glaucus in battle; learning that their grandfathers were guest-friends, they agree not to fight and swap armor, gold for bronze.

The same book holds the poem’s most famous domestic scene. Back in Troy, Hector finds his wife Andromache and their baby son Astyanax near the Scaean Gates. She begs him to fight from the walls. He answers that he knows Troy will fall, and that he cannot hang back. The baby screams at the nodding plume of his father’s helmet; Hector laughs, takes it off, sets it on the ground and kisses his son. In Book 7 Hector duels Ajax until nightfall, and the two part with gifts.

Books 8-10: the embassy and the night raid

Zeus forbids the gods to interfere and tips the scales toward Troy. That night the Trojans camp on the plain, their thousand fires shining like stars around the moon. In Book 9 a desperate Agamemnon sends an embassy to Achilles: Odysseus, Ajax and old Phoenix, who raised him. The offer is enormous: Briseis back, with an oath that he never touched her, tripods, gold, horses, seven women from Lesbos and one of Agamemnon’s daughters in marriage.

Achilles says no. His reply is the moment where the poem questions its own values. His mother has told him of two fates (9.410-416): stay at Troy, die young and win glory that never fades, or go home and live long without fame. No gifts are worth a life. He will fight again only when fire reaches his own ships.

Book 10, the Doloneia, follows Odysseus and Diomedes on a night raid: they catch the Trojan spy Dolon, kill him, then slaughter the Thracian king Rhesus and his men and drive off his horses. Ancient commentators already suspected the book was a later addition, and many modern scholars still do.

Books 11-17: battle at the ships and the death of Patroclus

The best Greeks are wounded one by one: Agamemnon, Diomedes, Odysseus. Hector smashes the gate of the Greek wall with a boulder. Poseidon helps the Greeks behind Zeus’s back, and in Book 14 Hera puts Zeus to sleep: wearing Aphrodite’s embroidered band, she seduces him on Mount Ida with the help of Hypnos. Zeus wakes, restores his plan, and the Trojans reach the ships. Ajax, standing on the sterns, holds them off with a pike.

Patroclus then persuades Achilles to let him fight in his armor. In Book 16 he drives the Trojans back, kills Sarpedon, the son of Zeus, whom his father lets die while raining drops of blood, then pushes on toward the walls against Achilles’ orders. Apollo strikes him from behind and knocks off his helmet; Euphorbus spears him; Hector finishes him. With his last breath Patroclus tells Hector that Achilles will kill him. The two armies fight over the body for all of Book 17, and Hector puts on Achilles’ armor, stripped from the corpse.

Books 18-22: Achilles returns and Hector falls

When Antilochus brings the news, Achilles pours ash over his head and screams so loudly that Thetis hears him at the bottom of the sea. He accepts death if that is the price of revenge. His mother asks Hephaestus for new armor, and Book 18 describes the Shield of Achilles: earth, sky, sea and stars; a city at peace, with a wedding and a lawsuit; a city under siege; ploughing, harvest, a vineyard, cattle attacked by lions, a dance; and around the rim, the river Ocean. The shield shows everything the war shuts out.

In Book 19 Achilles makes peace with Agamemnon without caring about the gifts. His horse Xanthus, given a voice by Hera, foretells his death. In Book 20 Zeus lets the gods join the battle. Achilles kills so many Trojans that the river Scamander, choked with bodies, rises against him and nearly drowns him until Hephaestus beats it back with fire (Book 21).

In Book 22 Hector stays alone outside the Scaean Gates, ignoring the pleas of Priam and of his mother Hecuba. When Achilles approaches, he loses his nerve and runs three times around the walls. Zeus weighs their fates on golden scales, and Hector’s sinks toward Hades. Athena takes the shape of his brother Deiphobus to make him stand and fight, then vanishes. Hector understands he is alone, dies asking that his body be returned to his family, and is refused. Achilles pierces the tendons of his feet, ties him to his chariot and drags him through the dust in sight of Troy.

Books 23-24: Priam in Achilles’ tent

In Book 23 Achilles gives Patroclus a huge funeral: he kills twelve Trojan youths on the pyre, then hosts funeral games (chariot race, boxing, wrestling, a footrace) where he is generous and settles disputes. But his anger is not spent. For twelve days he drags Hector’s body around his friend’s tomb, while Apollo keeps it from decay.

The gods intervene. Zeus sends Thetis to tell Achilles to give the body back, and Iris to tell Priam to ransom it. The old king crosses the plain at night with a wagon of treasure, guided by Hermes. He enters the tent, kneels and kisses “the terrible, man-slaying hands” that killed so many of his sons, and asks Achilles to remember his own father, Peleus. The two men weep together, one for Hector, the other for his father and for Patroclus. Achilles grants a truce of eleven days. The poem ends with the laments of Andromache, Hecuba and Helen, and a final line: “So they held the funeral of Hector, breaker of horses.”

The turning point: from wrath to pity

The Iliad is not built around a victory but around an anger that changes target. In Book 1 Achilles rages at Agamemnon; after Patroclus dies, his fury turns on Hector and on himself; in Book 24 it gives way before Priam. The poem opens with a father, Chryses, begging to ransom his daughter and being refused by Agamemnon. It closes with a father, Priam, begging to ransom his son and being received by Achilles. The symmetry measures how far the hero has come.

The other defining trait is its even gaze. Homer does not set heroic Greeks against barbarous Trojans. Hector is the most human character in the poem, and even minor warriors often get a few lines about the father, the land or the unfinished marriage they leave behind. Simone Weil’s essay The Iliad, or the Poem of Force (1940-1941) read it as the text that best shows how force turns into things both those who suffer it and those who wield it.

The gods of the Iliad

The gods are everywhere, and they take sides. Hera, Athena and Poseidon back the Greeks; Apollo, Aphrodite and Ares back the Trojans. They fight, get wounded, deceive each other and quarrel on Olympus. In Books 20 and 21 they even fight among themselves in a near-comic theomachy: Athena knocks Ares down with a boulder, and Hera boxes Artemis’ ears with her own quiver.

That lightness makes the human stakes heavier. Gods do not die; men do. Zeus himself does not save his son Sarpedon, for fear of upsetting fate. In Book 24 Achilles puts it to Priam: Zeus draws from two jars, one of evils and one of blessings, and no mortal receives blessings unmixed.

What the ancient sources tell us

• Homer is a name more than a biography. Seven cities claimed him, and Herodotus (2.53) dated him about four hundred years before his own time, around 850 BC. Most scholars now place the poem’s composition between 750 and 700 BC.
• The Epic Cycle, a set of lost epics known through summaries by Proclus, filled in what the Iliad leaves out: the Cypria before it; the Aethiopis, with Penthesilea, Memnon and the death of Achilles, right after it; then the Little Iliad and the Sack of Ilion, with the Trojan Horse.
• A tradition reported by Cicero (On the Orator 3.137) credits the Athenian tyrant Peisistratus, in the 6th century BC, with putting the Homeric poems in order; rhapsodes performed them at the Panathenaic festival.
• Scholars at Alexandria, above all Aristarchus of Samothrace in the 2nd century BC, edited the text and fixed the division into 24 books, labeled with the 24 letters of the Greek alphabet. The key medieval manuscript, the Venetus A (10th century, Marciana Library, Venice), preserves their notes in its margins.
• Plato both revered and attacked Homer: the Republic objects to quarrelling gods and to an Achilles who grieves loudly over death.
• In 1795, Friedrich August Wolf launched the Homeric Question by arguing the poem was stitched together from separate songs. In the 20th century Milman Parry and Albert Lord, studying oral singers in Yugoslavia, showed that the repeated epithets (“swift-footed Achilles,” “rosy-fingered Dawn”) were the working tools of improvised oral poetry.

The Iliad’s legacy

The Iliad was the Greek schoolbook for more than a thousand years. Plutarch says Alexander the Great slept with a copy annotated by Aristotle under his pillow, and honored Achilles’ tomb on landing in Asia. Virgil answered it in the Aeneid, from the side of the defeated. The medieval West, which no longer read Greek, knew the war mostly through late Latin accounts and the French Roman de Troie.

English translations form a history of their own: George Chapman’s (1598-1611), which inspired Keats’ sonnet “On First Looking into Chapman’s Homer” (1816); Alexander Pope’s (1715-1720); Richmond Lattimore’s (1951); Robert Fagles’ (1990); and Emily Wilson’s (2023). Heinrich Schliemann’s digs at Hisarlik from 1870 revived the question of a historical Troy. The psychiatrist Jonathan Shay used the poem in Achilles in Vietnam (1994) to describe combat trauma, and recent novels retell it from its margins: Patroclus in Madeline Miller’s The Song of Achilles (2011), Briseis in Pat Barker’s The Silence of the Girls (2018).

Further reading

For the whole conflict, from the golden apple to the sack of the city, read the Trojan War overview; for what happens right after the poem, the death of Achilles and the Trojan Horse. The poem’s main figures each have a profile: Achilles, Hector, Patroclus, Priam, Andromache and Diomedes. Homer’s other epic, the homecoming, is summarized in the Odyssey, and the bloody sequel in Agamemnon’s own house in the Oresteia. To set Ares and Athena beside other war deities, see war gods across world mythologies.