Under the military system, convicts sentenced to more than three decades in prison are eligible for parole after 10 years, and Private Manning is receiving 1,294 days credit — a little more than three years — for time in custody and for a 112-day period in which the judge ruled he was mistreated during pretrial confinement. He is expected to serve his time at the Army prison at Fort Leavenworth, Kan.
http://www.nytimes.com/2013/08/22/us/manning-sentenced-for-leaking-government-secrets.html?_r=0