donald trump mark milley
US President Donald Trump speaks as Joint Chiefs of Staff Chairman, Army Gen. Mark Milley looks on after getting a briefing from senior military leaders in the Cabinet Room at the White House on October 7, 2019.
  • On Friday, former Army General Mark Milley retired from leading the US military.
  • Milley finished his four-year term as the Joint Chiefs of Staff, which included two years under Trump.
  • The two often disagreed, and Milley made it clear what he thought of Trump's legacy.

At a retirement ceremony for former Chairman of the Joint Chiefs of Staff Mark Milley, the Army general offered some parting words seemingly aimed at former President Donald Trump.