An Army judge on Tuesday acquitted Pfc. Bradley Manning of aiding the enemy by disclosing a trove of secret U.S. government documents, a striking rebuke to military prosecutors who argued that the largest leak in U.S. history had assisted al-Qaeda.

The judge, Army Col. Denise Lind, found Manning guilty of most of the more than 20 crimes he was charged with, including several counts of violating the Espionage Act. She also acquitted him of one count of violating the Espionage Act that stemmed from his leak of a video that depicted a fatal U.S. military airstrike in Farah, Afghanistan.