Battle over the body of Patroclus, which is rescued by the Greeks. The Trojans advance once again. Achilles' despair at the death of Patroclus. Thetis promises him new arms. Achilles' appearance on the wall and his war-cry stop the Trojans, who hold a council of war.
Hector carries the day for staying outside of the walls and fighting it out.
E. Fourth Day 19. Achilles and Agamemnon reconciled. Preparation for the decisive battle. The battle begins, with gods helping on both sides. Achilles leads the Greek advance, with great slaughter of the Trojans.