The 5 Pandus were meant to represent the 5 lower chakras under the power of the soul and the 100 evil minded sons of Dhritarashtra were meant to represent all the vices man is subject to in life, Duryodana chief among them as Material Desire.
Which came first? the war? or the allegory of man's spiritual quest? I think the later! Vyasa's Bhagavad Gita came first, the so-called war was added to tell the story!, get it? The field of the body (kurushetra) is where the battle is fought between the evil and good tendencies (there's that duality again, God and the Devil). Hence the BG is as Religious as any Christian scripture. It's really a beautiful story that MMY really hasn't addressed, that wasn't his intention after all, but that's another story.
