Bradley Manning's lawyer has announced he is to formally request that US President Barack Obama pardons his client.
Speaking at a news conference after Manning was handed a 35-year sentence, David Coombs said: "The time to end Bradley Manning's suffering is now.
"The time for our president to focus on protecting whistle-blowers instead of punishing them, is now. The time for our president to pardon Bradley Manning is now."
Julian Assange has hailed a "significant tactical victory" in the case of Bradley Manning after the former US soldier was handed a 35-year sentence.
In a statement, he said: "While the defence should be proud of their tactical victory, it should be remembered that Mr Manning’s trial and conviction is an affront to basic concepts of Western justice...
"Mr Manning’s treatment has been intended to send a signal to people of conscience in the US government who might seek to bring wrongdoing to light. This strategy has spectacularly backfired, as recent months have proven.
"Instead, the Obama administration is demonstrating that there is no place in its system for people of conscience and principle. As a result, there will be a thousand more Bradley Mannings."
WikiLeaks tweeted that Bradley Manning's 35-year sentence was a "significant strategic victory" due to time in which the soldier could be released on parole.
Significant strategic victory in Bradley Manning case. Bradley Manning now elegible for release in less than 9 years, 4.4 in one calculation
Bradley Manning will be eligible for parole after serving one third of his sentence, which will be reduced by the time he has already served in prison plus 112 days.
Defence attorneys had not made a specific sentencing request but pleaded with Judge Colonel Denise Lind not to "rob him of his youth."
Guardian reporter Paul Lewis is at the military court in Fort Meade, Maryland.
Bradley Manning was quickly ushered from the court. Supporters shouted "we'll keep fighting for you Bradley" and "you're our hero".
Bradley Manning will be dishonourably discharged from the US army and will forfeit some pay.
His sentenced will be reduced by the 1,182 days already spent behind bars plus a further 112 days for abuse received whilst already held.
US soldier Bradley Manning has been sentenced to 35 years in prison.
Manning, 25, was convicted last month of espionage, theft and other charges in the biggest leak of classified information in American history.
He was acquitted of aiding the enemy, the most serious of the charges against him.
Bradley Manning was pictured earlier arriving at Fort Meade in the US state of Maryland, where he will face a military judge.
His sentencing is expected in the next few minutes.
A military judge is this afternoon due to sentence US soldier Bradley Manning, convicted last month of espionage charges.
Manning faces up to 90 years in prison for giving WikiLeaks more than 700,000 US military and diplomatic documents.