New U.S. Defense Secretary Pete Hegseth, in one of his first acts in the job since being appointed by President Donald Trump, has revoked the personal security detail and security clearance for retired Army general and former chairman of the Joint Chiefs of Staff Mark Milley.

Defense Secretary Pete Hegseth has told Gen. Mark A. Milley, retired chair of the Joint Chiefs of Staff, that he is removing his security detail, revoking his security clearance, and ordering an inquiry into his record.

Retired Gen. Mark Milley, who served as chairman of the Joint Chiefs of Staff in the Trump and Biden administrations, has had both his security detail and security clearance revoked, the Pentagon says.

Defense Secretary Pete Hegseth on Tuesday revoked the security detail and security clearance for Gen. Mark Milley, according to Pentagon spokesman John Ullyot, an unprecedented move against the former top US general who became a frequent target of President Donald Trump.

Pentagon Secretary Pete Hegseth will “immediately” pull retired Gen. Mark Milley’s security detail and revoke his security clearance, according to a new Fox News report. Those plans — the latest act of political retribution against those deemed enemies of President Donald Trump — will include an inspector general inquiry into Milley’s work.

The Pentagon’s inspector general will review the conduct of the former chair of the Joint Chiefs of Staff, who has been a vocal critic of the President.