FORT MEADE, Md. — An Army private suspected of sending reams of classified documents to the secret-sharing WikiLeaks website was illegally punished at a Marine Corps brig and should get 112 days cut from any prison sentence he receives if convicted, a military judge ruled Tuesday.

Army Colonel Denise Lind ruled during a pretrial hearing that authorities went too far in their strict confinement of Private Bradley Manning for nine months in a Marine Corps brig in Quantico, Va., in 2010 and 2011. Manning was confined to a windowless cell 23 hours a day, sometimes with no clothing. Brig officials said it was to keep him from hurting himself or others.