They didn't fail. They may have lost the battle, but their sacrifices created success in ways that are, in themselves, epic.
Briton of Rose - August 8, 2008, 4:48 pm,
No, He's right. They failed to crush the Persian Army, but they did enough damage that the world remembers their efforts. Hence, their failure became epic.
Tyr - August 26, 2008, 9:25 pm,
They where not trying to stop the Persian advance just slow it down. They knew they would be routed. But then the Spartan army would mobalize and crush the Persians. Thus not a Epic Fail. Not even a fail.