Last month, he was convicted of 20 charges.
The former military intelligence analyst was convicted of espionage, theft and computer fraud charges for his actions.
However, a military judge last month found him not guilty of the most serious charge of aiding the enemy, which carries a life sentence.
Manning had admitted to giving WikiLeaks more than 700,000 battlefield reports and diplomatic cables, and also a video of a 2007 US helicopter attack that killed a news photographer, his driver and civilians in Iraq, prompting an outcry.
In his defense, Manning had said he leaked the material to expose the US military's "bloodlust" and disregard for human life, and what he considered American diplomatic deceit, partnering WikiLeaks founder Julian Assange's website to provoke a debate and "spark reform".
--IBNS (Posted on 21-08-2013)