 Unger's assignment prior to assuming command was Division Chief for Health Service Support Division, Joint Chiefs of Staff J4/Deputy Joint Staff Surgeon.Unger’s awards and decorations include the Defense Superior Service Medal, Legion of Merit, Meritorious Service Medal (6 OLC), Joint Meritorious Service Medal, Joint Service Commendation Medal, Army Commendation Medal (6 OLC), Army Achievement Medal (5 OLC), Armed Forces Expeditionary Medal, Kuwait Liberation Medal (Kuwait), Korea Service Medal, National Defense Service Medal and the Humanitarian Service Medal.He wears the Expert Field Medical Badge.