FORT MEADE - The trial date for a US Army private accused of passing a trove of secret documents to WikiLeaks has been pushed back from Feb to March next year, a military judge said. The court-martial of Bradley Manning, 24, charged with the most serious security breach in US history, previously had been scheduled to begin on Feb 4. But the judge, Col Denise Lind, announced at a pre-trial hearing north of Washington in Fort Meade, Maryland that more time was needed to handle various motions.