Cassius Clay (that was in fact his legal name before he became a Muslim) couldn't have gone for a medical exemption because then he would be declared unfit to fight. It was about keeping himself safe and ensuring he could come back out to fight and make money. Even if you disagree with his motives. The bottom line is he was NOT HEROIC or brave.
Clay's "bravery in standing up to war" is akin to a bank robber's bravery in standing up against poverty!
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Joe
See Porsche run. Run, Porsche, Run:
`87 911 Carrera