Sergeant Major Miller enlisted in the Marine Corps in 1995 and attended recruit training at Marine Corps Recruit Depot, San Diego and the School of Infantry, Camp Pendleton.  Upon graduation, he reported to Marine Corps Engineer School, Camp LeJeune, where he earned the MOS 1371.

Sergeant Major Miller reported to Bravo Company, 6th Combat Engineer Support Battalion.  In December 2002, Sergeant Major Miller deployed to Kuwait in support of Operation Enduring Freedom, and Operation Iraqi Freedom.

In 2007, Sergeant Major Miller entered the active component and received orders to 2d Combat Engineer Battalion where he was subsequently attached to 2d Battalion, 9th Marines from Sept 2008 to Aug 2009 in Camp Ramadi Iraq.  Immediately upon return from Iraq, Sergeant Major Miller deployed again from Sept 2009 to June 2010 with 3rd Battalion, 4th Marines in support of combat operations in Southern Helmand Providence, Afghanistan.

Upon returning from deployment, Sergeant Major Miller reported to Marine Corps Recruit Depot, Parris Island, for Drill Instructor Duty.  Sergeant Major Miller served as Drill Instructor and Senior Drill Instructor before being assigned to the Water Survival Section as the Staff Non-Commissioned Officer in Charge.  In 2012 year, Sergeant Major Miller became an instructor at Drill Instructor School.  While at Drill Instructor School Sergeant Major Miller served as the Academic Coordinator and Squad Instructor.

In 2014, Sergeant Major Miller received orders to 1st Combat Engineer Battalion where he served as Platoon Sergeant and Company Gunnery Sergeant.  In August 2014, Sergeant Major Miller deployed as the Engineer Chief, Camp Commandant and the Command Element Company Gunnery Sergeant for the SPMAGTF-CR-CC 15-1.

In December 2014, Sergeant Major Miller was selected to First Sergeant and in June 2015 assigned as Company First Sergeant with Service Company, 9th Communication Battalion, Camp Pendleton.First Sergeant Miller also served as Company First Sergeant with Headquarters Company, I Marine Expeditionary Force Headquarters Group, I Marine Expeditionary Force.

From June 2018 thru April 2019, Sergeant Major Miller served as the Company First Sergeant for B Company, Marine Barracks Washington, D.C..  After being selected for promotion, Sergeant Major Miller was appointed the Sergeant Major of Combat Instructor Battalion at The Basic School on 5 April 2019.

Sergeant Major Miller’s personal awards include the Meritorious Service Medal, Navy Marine Corps Commendation Medal with three gold stars in lieu of fourth award, Army Commendation Medal, Navy Marine Corps Achievement Medal with two gold stars in lieu of third award and the Combat Action Ribbon.