He was relieved of duty on Saturday for a "loss of confidence in his ability to command."
Mansoor Adayfi lives under near-constant surveillance in Serbia and his legal status in the country is uncertain.
The government is relying on a shaky legal basis for bombing the Islamic State.
After 14 years of imprisonment without charge, Abdul Latif Nasser thought he was finally going home. Then Donald Trump won.
That leaves some of the current detainees stuck in a legal "no man's land," a federal judge said.
Trump's Supreme Court nominee spent years defending the government's right to imprison some people without charge.
“This is a repugnant attempt to rewrite history and normalize governmental abuse of power," a Japanese-American history organization said.
The president had said he would keep Gitmo open and "load it up with some bad dudes."
"Trump has explicitly endorsed indefinite detention rather than a detention 'informed by the laws of war,'" lawyers argued in a new legal filing.
Cross-posted from TomDispatch.com Few Americans ever took in the vastness of the prison outsourcing system the administration