[3][4][5][6][7] Born in Staunton, Virginia and raised in the Shenandoah Valley,[2][8] Miller earned a Bachelor of Science degree from the United States Military Academy in 1990.

[1][6] He later continued his education at the School of International and Public Affairs at Columbia University while serving as an instructor, and briefly as an assistant professor of political science, at the United States Military Academy.

[6][8] From 2008 to 2009, Miller served as a senior advisor to Chairman of the Joint Chiefs of Staff Michael Mullen.

[12] In January 2022, Miller was reassigned to the Army Staff as the Director, Strategy, Plans and Policy, replacing Major General Bradley Gericke.

[13] This article incorporates public domain material from websites or documents of the United States Government.