Pete Hegseth told Milley, a critic of Trump, that he had ordered an investigation to determine whether his rank should be re-evaluated.

The Pentagon has asked its inspector general to review the record and behavior of Gen. Mark A. Milley, the retired chairman of the Joint Chiefs of Staff who stood up to President Trump in his first term.

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.