Mark Alexander Milley (born 20 June 1958) is a retired United States Army general who served as the 20th chairman of the Joint Chiefs of Staff from 1 October 2019, to 30 September 2023. He had previously served as the 39th chief of staff of the Army from 14 August 2015, to 9 August 2019 and held multiple command and staff positions in eight divisions and special forces. A Reserve Officers' Training Corps graduate from Princeton University, Milley earned his commission as an armor officer in 1980. He later received a master's degree from Columbia University.
https://en.wikipedia.org/wiki/Mark_Milley