Briseis: the woman who almost cost the Greeks the Trojan War

Short answer: Briseis was a princess captured by Achilles during the Trojan War. Apollo sent a plague that forced Agamemnon to give back his own captive, Chryseis, so the king took Briseis from Achilles to replace her. Achilles refused to fight, and the Greek army started dying by the thousands. The Iliad, the founding poem of Western literature, is not about the war: it is about the fury of one man over her.

Why Agamemnon took her

Agamemnon had his own war prize, Chryseis, but her father was a priest of Apollo, and the god sent a plague until Agamemnon gave her back. Humiliated, the king restored his honor with arithmetic: if I lose my prize, I take yours. He seized Briseis from Achilles knowing exactly what it meant. It was not desire. It was a public demotion of the best warrior alive.

The chain reaction

Move	Consequence
Agamemnon takes Briseis	Achilles withdraws from battle
Achilles sits out	The Trojans, led by Hector, reach the Greek ships
Desperate, Agamemnon offers her back with treasure	Achilles refuses: the insult is bigger than the gift
Patroclus fights in Achilles' place and dies	Achilles returns, not for Briseis, but for revenge

Quick questions

Did Achilles love Briseis?

The Iliad says more than you would expect. Briseis mourns Patroclus by recalling he promised she would become Achilles' lawful wife, and Achilles calls her "the wife of my heart" in his tent. For a poem about rage, it hides a genuinely tender thread.

Was Briseis returned to Achilles?

Yes. When Agamemnon finally makes peace, he swears he never touched her and sends her back with gifts. She was beside Achilles for the little that remained of his life.

Briseis vs Chryseis: who was who?

Easy to confuse, deliberately parallel: Chryseis was Agamemnon's captive, returned to her father to stop Apollo's plague. Briseis was Achilles' captive, taken by Agamemnon as compensation. One woman starts the plague, the other starts the plot.

The whole war began with a golden apple: read the judgement of Paris and Helen of Troy. Then hear the quarrel itself in MythologyNow, the app to learn mythology: chapter 1 of the Iliad is the fight over Briseis, and it plays in full on this site.