138th Regiment Commanding Officer
Lt. Col. Nicholas C. Roukas
Commander, 138th Regiment
Before becoming Commander, Regional Training Institute, Lt. Col. Roukas was assigned as 81st Troop Command G3.
Lt. Col. Roukas’s first assignment after Advanced Individual Training (AIT) was with the 2nd Battalion, 152nd Infantry Regiment, 38th Infantry Division, where he served as a TOW gunner in a mechanized Anti-Tank Platoon.
In May 2003, he received an Army commission to 2LT following two years in the Ball State University ROTC program. He was assigned to Charlie Company, 2-152 IN (MECH) as a Platoon Leader and deployed to Bosnia-Herzegovina (SFOR15) from February through December of 2004. Upon redeployment he deployed again with 2-152 IN (MECH) for two months to Mississippi and Louisiana to provide humanitarian support in response to Hurricane Katrina.
In late November 2005, he received orders to the 151st IN DET (LRS) where he served as an Operations Officer for two years. The unit later re-flagged to Charlie Company 2-152 CAV (LRS), where he served as Company Executive Officer and Commander until April of 2012.
During his tenure at C/2-152 CAV (LRS), Lt. Col. Roukas deployed to Afghanistan as a Task Force Central Operations Officer to 3rd Ranger Battalion, 75th Ranger Regiment for a period of three months. Post Company Command, he was assigned as Insertion and Extraction Officer and Operations Officer (S3) in 2-152 CAV (R and S) from April 2012 to October 2015. He then facilitated the transition of the 2-152 CAV Squadron to an Infantry Battalion (2-152 IN) as Executive Officer from October 2015 to July 2017.
Lt. Col. Roukas attended the resident Command and General Staff College in Fort Leavenworth, Kansas, and while there attended AWG selection and was assigned to the unit in June of 2018.
Following the six-month Operational Advisor Training Course (OATC), he served the unit as Troop Commander of 1 Troop, Charlie Squadron—departing the unit in June 2020. Following six months of transitory assignments at JFHQ and 38th ID, Lt. Col. Roukas assumed command of 1-151st Infantry Regiment, 76th IBCT for a period of 27 months. Following command, he accepted full time and traditional roles within the 38th Infantry Division—leading the Division as FTUS G3/Traditional G5 through a Warfighter exercise and up to pre-deployment/mobilization in September 2025.
Lt. Col. Roukas’ full-time career intertwines with the National Guard and military service. In early 2005, he accepted a position with the Indiana National Guard as a military technician (GS). There he served in the uniformed roles of Operations Officer at Muscatatuck Urban Training Center (MUTC) and SOF Integration Manager at Atterbury Muscatatuck Center for Complex Operations (AMCCO) from 2005 until 2020. Throughout his National Guard service, Lt. Col. Roukas also served in several active-duty assignments, including Wolf Operations Observer Controller (OC) Detachment Commander (MUTC); 3rd Ranger Battalion Operations Officer, Troop Commander, Asymmetric Warfare Group (AWG); and Executive Officer to the Commanding General, Combined Joint Task Force – Operation Inherent Resolve (CJTF-OIR). While a member of AWG, Lt. Col. Roukas served as Troop Commander of 1st Troop, Charlie Squadron. He deployed twice as the AWG Task Unit Commander, U. S. Central Command (CENTCOM) in addition to other global missions.
Lt. Col. Roukas deployed in 2024-2025 as an individual augmentee to CJTF-OIR performing the duties of Commander’s Action Group Director and CG Executive Officer. Upon return, he departed the full-time technician program to pursue further service as a senior military prototype and experimentation assessor with Blackrock Strategy.
His decorations include the Defense Meritorious Service Medal; Meritorious Service Medal (4 oak-leaf clusters); Army Commendation Medal w/ “C” Device ; Army Commendation Medal (4 oak-leaf clusters); Joint Service Achievement Medal; Army Achievement Medal (5 oak-leaf clusters); the National Defense Service Medal and many more.





