[3] He completed the Reserve Officers' Training Corps program at Washington & Jefferson, and received his commission as a second lieutenant of Air Defense Artillery.

[3] In November 1993 he was assigned as plans, operations, training, and intelligence officer (S2/3) for the Reserve's 362nd Quartermaster Battalion in Kinston, North Carolina, and he served in this position until September 1994.

[3] In 2005, Miller completed the United States Army War College, and received a Master of Science degree in strategic studies.

[3] After becoming a general officer in 2009, Miller was assigned as director of doctrine, training and force development (J7) at the National Guard Bureau in Arlington, Virginia (May 2009 – September 2010).

[3] He then served as senior commander of the 10th Mountain Division's Rear Detachment at Fort Drum, New York (September 2010 – January 2012).

[3] In February 2012, Miller was assigned as assistant adjutant general—army at Joint Force Headquarters, New York Army National Guard in Latham.

[4][5] Miller's continuing education as a general officer included: Army Strategic Leadership Development Program-Basic (2010); General Officer Legal Orientation Course (2010); Army Strategic Leadership Development Program-Intermediate (2012); CAPSTONE, National Defense University (2013); Army Strategic Leadership Development Program - Advanced (2014); Dual Status Commander Course (2014); National Security Studies Management Course (NSSMC) (2015) Syracuse University; and National and International Security Course (NIS), Harvard University, (2015).