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 Zachary Shevin July 21, 2019 Former Princeton ROTC Cadet General Mark Milley ’80 discussed U.S. military challenges and political issues at his Senate confirmation hearing on July 11. Milley has been nominated to serve as the 20th Chairman of the Joint Chiefs of Staff.