In the story Achilles declined the offer of Agamemnon, so Patroclus go to the war as Achilles. Then, when Hector killed Patroclus,then Achilles revenge to Hector with his anger and rages, so Achilles fight Hector. So Hector Dies, and because of this the Trojans don't have a better fighter/leader for Trojans. So Trojans lose to Achaians.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7e5tE6TerQfZRoEs0YiCoo-m4vp9QhYKivpze6x6FFzbn7bVXq9iebtsm7Ba9KF4ZfLTO7oULBK17-sdp072r0ZI54CznhY_zNsOodYLTTE6ZFJXA8e9doRPMFhPw3ZTKqj9h2-BLg3Y/s320/hector+and+achilles.jpg)
As you can see, in every decisions we make many things will be done or will be change. Our life is like an Official Chess Game, Every time we make decision we must think it carefully, because if we make mistake, we lose.
Bonus:
For me, Heroism is the life giver, savior, protector and who face his weakness to protect someone. For me, Hector is a favor hero of Iliad, because he protect his countrymen, save his brother Paris, and he sacrifice to be with his family but he face the danger in the war.