I am Mark Alexander Milley,born June 20, 1958,im is a United States Army general who i has been serving as the 20th chairman of the Joint Chiefs of Staff since October 1, 2019. i previously served as the 39th chief of staff of the Army from August 14, 2015, to August 9, 2019,and i held multiple command and staff positions in eight divisions and special forces throughout my military career