What is the importance of the Port of Aulis in the novel, Clytemnestra?

Aulis is the location of Iphigenia's sacrifice and the port that Agamemnon's army gathers to leave for the Trojan War. Agamemnon lures Clytemnestra and Iphigenia to this location by creating a false wedding for Iphigenia and the hero Achilles. The night of the supposed wedding, Agamemnon ties up Clytemnestra and Iphigenia, and brings Iphigenia to a pyre for a ritual sacrifice. Iphigenia is killed and the navy leaves in the following day.