The Trojan War in which Achilles fought was a struggle between two different groups—the Greeks and the Trojans—over Helen, who was a symbol of Greek pride as the most beautiful woman in the world. Modern-day scholars do not know for sure just how much of the story of the Trojan War is fiction, but the story reflects the reality of living in a time period when the ancient Greeks were frequently in conflict with nearby regions for control of land and resources. The warrior culture of ancient times arose from the need to protect land used for farming or keeping animals. Warriors also conquered more land when poor farming conditions or conflict with other peoples made moving necessary. Young men were trained in warrior skills as well as in the warrior code of honor and glory. Under the command of Alexander the Great, the Greeks succeeded on the battlefield and spread their empire across much of what is now the Middle East and western Asia. In an oral culture such as ancient Greece, the tales of battles and heroism passed on from generation to generation highlighted the importance of heroic deeds and glory.
The glory Achilles achieves does not make him a perfect example of a Greek man, however. His pride causes him to put himself above that of the army in which he fights, and results in both heavy Greek losses in battle and the death of his own best friend Patroclus. This flaw in the character of Achilles reflects the importance of the group over that of an individual to the ancient Greeks. In ancient Greek society, life was so difficult that people relied heavily on their social relationships in order to survive; one person acting for his or her own interests rather than that of the group could bring about the downfall of everyone.