Sergeant Major Joshua K. Miller was raised in Greenfield, Indiana. He enlisted in the Marine Corps in June 1999. In June 2000, Lance Corporal Miller attended MOS School and upon graduation was given the MOS 6322, CH-46 avionics technician.
In September 2000, Lance Corporal Miller reported to Marine Medium Helicopter Squadron 261. In February 2002, Corporal Miller deployed with the 22d MEU in support of OEF. Promoted in December 2002, Sergeant Miller attended Sergeants Course where he was the honor graduate. In April 2004, Sergeant Miller reported to MCRD San Diego, CA and served as a Drill Instructor and Senior Drill Instructor.
In September 2007, Staff Sergeant Miller transferred to Marine Medium Helicopter Squadron 264 at MCAS New River, NC. In February 2008, he attended the Career Course where he was recognized as the honor graduate. In September 2008, Staff Sergeant Miller deployed with the 26th MEU in support of Landing Forces 6th Fleet operations. In July 2009, Staff Sergeant Miller reported to Marine Medium Tiltrotor Training Squadron 204, where he served as an avionics technician. In November 2011, Gunnery Sergeant Miller reported to Marine Medium Tiltrotor Squadron 365, where he served as the quality assurance chief in support of OEF 12-1. In February 2013, Gunnery Sergeant Miller attended the Advanced Course where he was recognized as a distinguished graduate.
In May 2013, Gunnery Sergeant Miller reported to the U.S. Naval Academy, where he served as the 22d Company Senior Enlisted Leader to the Commandant of Midshipmen. In March 2014, First Sergeant Miller was transferred to Company L, 3/2, Camp Lejeune, North Carolina. In February 2015, he deployed as in support of UDP-E in Okinawa, Japan. In December 2015, First Sergeant Miller reported to Service Company, Headquarters Regiment, 2d MLG. In September 2016 he attended the Navy Senior Enlisted Academy where he was recognized as the honor graduate.
In January 2018, First Sergeant Miller reported to Utilities Instruction Company, Marine Corps Engineer School. In February 2019 he was frocked to his current rank and reported to Site Support, 4th CEB, 4th Marine Division, Baltimore, MD as the Inspector-Instructor Sergeant Major. In March 2022, Sergeant Major Miller reported to 2d Intelligence Battalion, II MEF Information Group, where he currently serves.
Sergeant Major Miller holds a B.S. in Professional Aeronautics from Embry-Riddle Aeronautical University and a M.S. in Strategic Leadership from the University of Charleston, West Virginia. His personal awards include the Meritorious Service Medal with one gold star, Navy and Marine Corps Commendation Medal with three gold stars, and the Navy and Marine Corps Achievement Medal with two gold stars.