President Donald Trump on Friday fired the chairman of the Joint Chiefs of Staff, Air Force General C.Q. Brown, and pushed out five other admirals and generals in an unprecedented shake-up of U.S. military leadership.

In an unprecedented purge of the military’s senior leadership Friday night, President Donald Trump fired the top US general just moments before his defense secretary fired the chief of the US Navy and the vice chief of the Air Force.

The decision to fire Gen. Charles Q. Brown Jr., a four-star fighter pilot, broke a tradition in which the Joint Chiefs chairman remains in place with a new president.