WASHINGTON — A military judge has reached a verdict and will announce it Tuesday afternoon in the high-profile court-martial of Pfc. Bradley Manning, the former Army intelligence analyst whose release of some 700,000 secret documents to WikiLeaks opened a window into American military and diplomatic activities.

The judge, Col. Denise Lind, will read the verdict from the bench at 1 p.m. at Fort Meade, Md., the army said in a statement.

Private Manning has already confessed to being WikiLeaks’ source for the files, which included videos of airstrikes in which civilians were killed, hundreds of thousands of front-line incident reports from the Afghanistan and Iraq wars, dossiers on men being held without trial at the Guantánamo Bay prison, and about 250,000 diplomatic cables.