What did Agamemnon do before leaving for the war?

Before leaving for the Trojan War, Agamemnon, the king of Mycenae, was compelled to sacrifice his daughter, Iphigenia, to appease the goddess Artemis, who had calmed the winds and delayed the Greek fleet's departure. This act was meant to ensure favorable sailing conditions for the Greek forces. Additionally, he gathered his army and allies, uniting various Greek city-states under his command to launch the expedition against Troy.