Mistakes
Achilles stabs Hector in the chest in their climactic battle. Hector, dying, falls to his knees and falls onto his right side with his arm underneath him. Achilles goes to his chariot and returns with a rope. Hector now has his right arm stretched out with his head lying on it. See more...
Trivia
Brad Pitt, portraying Achilles, actually injured his Achilles tendon in September 2003, while filming, which delayed the shooting of the climactic battle scene with Eric Bana, until December. The Achilles tendon is named after the mythological Greek warrior Achilles, who according to legend was mortally wounded by an arrow that hit his Achilles tendon. Achilles became almost entirely invincible to injury when his mother immersed him in the magical Styx River. Since she held him by the heel, which was not immersed in the river, Achilles had only one weak spot, his Achilles tendon, which ultimately led to his downfall. See more...
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Troy (2004)
Directed by Wolfgang Petersen, starring Brad Pitt, Brendan Gleeson, Brian Cox, Eric Bana, Orlando Bloom, Peter O'Toole, Saffron Burrows, Sean Bean (add more)
Genres: Action, Drama, History, Romance, War
This film is loosely based on the Iliad, not a direct copy. As such, any book/film differences aren't valid. If you're interested in the "facts" of the story, such as they are, check them at the Wikipedia.