General Mark Milley ’80 speaks at the 2019 commissioning ceremony for graduating Princeton ROTC Cadets. Milley is an alumnus of the program. Courtesy of the Office of Communications Written by Marie-Rose Sheinerman Nov. 4, 2019 Former Princeton ROTC Cadet General Mark Milley ’80 was officially confirmed as the next Chairman of the Joint Chiefs of Staff by the Senate on Thursday, July 25. The University alum will now be the highest ranking officer in the United States Armed Forces and will serve as President Trump’s most senior military adviser.