The WaPo makes the case:

After all was said and done, the jury was convinced that Mr. Hamdan was simply a low-level, uneducated father of two who stuck with a job chauffeuring Osama bin Laden because it paid well enough to support his family. It is one thing for a defense lawyer to assert such a benign explanation, another for a military jury sitting in judgment to endorse it. Apparently nothing contained in evidence introduced in secret sessions persuaded jurors to believe otherwise.