The Price of a Fair Wind
Before the Greek fleet could sail to Troy, a terrible price had to be paid. Agamemnon, king of Mycenae and commander of the Greek forces, had angered Artemis — either by killing a sacred deer or by boasting that he was a better hunter than the goddess herself. In retaliation, Artemis becalmed the winds at Aulis, trapping the entire Greek fleet in the harbor.
The seer Calchas delivered the devastating prophecy: the winds would only return if Agamemnon sacrificed his eldest daughter, Iphigenia, to Artemis.
A Father's Betrayal
Agamemnon was torn between his duty as a commander and his love as a father. Under pressure from the army and especially from his brother Menelaus (whose wife Helen had been taken to Troy), Agamemnon agreed. He sent word to Clytemnestra that Iphigenia should come to Aulis to marry Achilles.
The girl arrived joyfully, believing she was to be married to the greatest warrior in Greece. Instead, she was led to the altar of sacrifice. In Euripides' version, Iphigenia initially begged for her life, then chose to go willingly, declaring that her sacrifice would give glory to Greece.
Saved by the Goddess?
The traditions split here. In the older versions, Iphigenia died on the altar and the winds returned. But in Euripides' Iphigenia at Aulis and Iphigenia in Tauris, Artemis snatched the girl away at the last moment, replacing her with a deer on the altar, and transported Iphigenia to the land of the Taurians (modern Crimea), where she became a priestess of Artemis.
Years later, her brother Orestes arrived in Tauris, and the siblings recognized each other in a deeply emotional reunion before escaping together back to Greece.
The Root of the Curse
Whether Iphigenia lived or died, the sacrifice at Aulis set the entire tragic machinery of the House of Atreus in motion. Clytemnestra never forgave Agamemnon for murdering their daughter. When he returned from Troy ten years later, she killed him in his bath — and that murder led to Orestes killing Clytemnestra, and the Furies pursuing Orestes, until Athena finally broke the cycle.
Iphigenia's sacrifice is the match that lit a generational inferno.
Quick Facts
Parents: Agamemnon and Clytemnestra
Siblings: Orestes, Electra, Chrysothemis
Fate: Sacrificed at Aulis (or rescued by Artemis)
Purpose: To gain fair winds for the Greek fleet sailing to Troy
Source: Euripides' Iphigenia at Aulis, Iphigenia in Tauris