Lieutenant Colonel (LTC) Mariah McCallum is a native of Bozeman, Montana. She enlisted in the Army in 2005 and was commissioned as a Second Lieutenant thru Officer Candidate School at Fort Benning, GA in 2005
LTC McCallum was most recently assigned to the Joint Staff J-6 where she led the Capability Gap Assessment team. She previously served as the Commander, Headquarters & Headquarters Detachment, Cyber Center of Excellence, Fort Eisenhower, GA. Prior to that, LTC McCallum was the Battalion Executive Officer of 50th Signal Battalion (Expeditionary) – Enhanced at Fort Bragg, NC.
LTC McCallum’s other key assignments include: Operations Officer, 50th Signal Battalion (Expeditionary) – Enhanced at Fort Bragg, NC; Senior Network Support Company Commander Observer Controller, Operations Group, National Training Center, Fort Irwin, CA; Brigade Support Battalion S-6 Observer Controller, Operations Group, National Training Center, Fort Irwin, CA; Commander, Headquarters & Headquarters Company, 704th Brigade Support Battalion, 4th Infantry Division, Fort Carson, CO and Afghanistan; S-6, 704th Brigade Support Battalion, 4th Infantry Division, Fort Carson, CO and Afghanistan; S-6, 2-82 Aviation (ASSLT) Battalion, 82nd Airborne Division, Fort Bragg, NC and Afghanistan; Platoon Leader, A Company, Division Special Troops Battalion, 82nd Airborne Division, Fort Bragg, NC and Afghanistan.
LTC McCallum’s military awards and decorations include the Bronze Star Medal, Defense Meritorious Service Medal, Meritorious Service Medal with four Oak Leaf Clusters, Army Commendation Medal, and Meritorious Unit Citation with 2 Oak Leaf Clusters. She earned the Joint Staff Identification Badge, Parachutist Badge, and Combat Action Badge. She was also awarded the Bronze Order of Mercury.
LTC McCallum holds a Bachelor of Science in Cell Biology and Neuroscience from Montana State University (2005), a Master of Applied Science in Environmental Policy and Management from the University of Denver (2014), and a Master of Science in Industrial and Management Systems Engineering from Montana State University (2023). Her military education includes the U.S. Army Command and General Staff College.
LTC McCallum has one son.