Duke University law Professor Scott L. Silliman said Manning's case doesn't rise to those levels. While Manning disclosed a vast amount of information, "I don't' think you could call Bradley Manning a spy," he said.
Military prisoners can earn up to 120 days a year off their sentence for good behavior and job performance, but must serve at least one-third of any prison sentence before they can become eligible for parole.
Manning will get credit for about 3 1/2 years of pretrial confinement, including 112 days for being illegally punished by harsh conditions at the Quantico, Va., Marine Corps brig.
Manning was convicted last month of 20 offenses, including six Espionage Act violations, five theft counts and computer fraud.
Under military law, the verdict and sentence must be reviewed — and may be reduced — by the commander of the Military District of Washington, currently Maj. Gen. Jeffery S. Buchanan. Besides the court-martial record, Manning's defense team can submit other pieces of information in a bid for leniency.
If Buchanan approves a sentence that includes a bad-conduct discharge, a dishonorable discharge or confinement for a year or more, the case will be automatically reviewed by the Army Court of Criminal Appeals.
Further appeals can be made to the military's highest court, the U.S. Court of Appeals for the Armed Forces, and the U.S. Supreme Court.
Amnesty International and the Bradley Manning Support Network have announced an online petition asking President Barack Obama to pardon Manning.
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