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Mission and Vision

Regional Training Institute ShieldMission Statement
The 138th Regiment (CA) conducts expert institutional training for Infantrymen, Warrant Officer Candidates, Officer Candidates and medical personnel as well as multiple functional area courses and marksmanship events throughout FY25-27 at Camp Atterbury, Indiana to enhance individual, leader and unit level readiness.

Vision Statement
The 138th Regiment (CA) is a premier Army institution of learning that continues a tradition of excellence which generates readiness and enables retention goals for the operational force to meet TAG retention initiatives and P2 readiness goals. This is accomplished by:

  • Producing the most talented graduates for the benefit of the Indiana National Guard and U.S. Army through a superior development experience
  • Acquiring, caring for, developing, employing and retaining the best cadre through stewarding talent and professional development
  • Providing cadre and staff well-planned and predictable schedules to foster work-life balance
  • Enhancing student and cadre experience through modernization of facilities and improved technology
  • Maximizing maintenance and care of facilities, oriented on customer service

Leadership

LTC Nicholas C Roukas

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.

Officer Candidate School

The Officer Candidate School (OCS) course educates, trains, evaluates, screens and develops officer candidates through our Indiana Traditional Program and the National Guard Bureau Accelerated Program to ensure they possess the moral, intellectual and physical qualities for commissioning and the leadership potential to serve successfully as company grade officers in the Indiana Army National Guard.

General eligibility requirements:

  • A minimum of 90 credit hours for admission
  • Be less than 42 years old at time of commissioning
  • Pass Chapter II commissioning physical
  • Pass Army Physical Fitness Test (APFT)
  • Be of good moral character
  • Commander's letter of recommendation

Warrant Officer Candidate School

The Warrant Officer Candidate School (WOCS) course is designed to assist in the development of Army Warrant Officers into self-aware and adaptive technical experts, combat leaders, trainers, mentors and advisors to both soldiers and commanders.

Requirements for acceptance:

  • Must be a U.S. citizen
  • GT score 110 or higher
  • High school graduate or GED
  • Secret security clearance
  • Chapter 2 physical
  • Documented experience in a specific field for technical warrant MOS
  • Visit US Army Recruiting Command for MOS-specific information

Infantry, Leader and Fitness Courses

The Infantry Qualification Course provides a logical progression of individual skills and tasks selected to develop disciplined and confident soldiers that are proficient in Common Skill Level One tasks and critical 11B10 Infantry Tasks. Aligns the development of competencies (knowledge, skills, abilities, attributes, and behaviors) in volunteers and enables their transformation into Army military professionals that are prepared (physically and mentally) to meet the rigors of the warrior tasks and battle drills. Graduates will be trained and educated in the skills of their military occupational specialty, enabling them to contribute as an effective team member at their first unit of assignment. Soldiers will also demonstrate proficiency in engaging targets with Individual and Crew-Served Weapons. 11B10 OSUT incorporates the Army Learning Model (ALM) which supports adaptive soldier training and education through practical exercises and enable soldiers to demonstrate mastery of individual tasks. Drill sergeants/instructors will integrate learner centricity into learning content that enable learners to understand what they are learning and why it is important.

Course Outcome:

The Infantryman will possess the ability to demonstrate proficiency and confidence to shoot, move, communicate, survive and adapt in situations required to become a productive member in their first unit of assignment.

The Infantry Transition Course is an MOS producing course that transitions (within CMF 11) and reclassifies (outside CMF 11) Reserve Component (RC) Sergeants and Staff Sergeants into MOS 11B Infantryman small unit leaders.

Course Outcomes:

  • Develop RC Infantry Sergeants and Staff Sergeants who demonstrate proficiency and competencies appropriate to their level.
  • Use Army Doctrine to operate with tactical efficiency as a Fire Team or Squad/Section Leader within a platoon as part of a combined arms element.
  • Lead, train and educate, care for soldiers and equipment, maintain and enforce standards.
  • Communicate (orally and written) or take appropriate action to ensure mission accomplishment by using adaptive and critical thinking.

Infantryman Advanced Leaders Course is a two-phased course. Phase 1 is 6 days VL and Phase 2 is 16 days ADT. Infantryman Advanced Leader Course (ALC) is a branch-specific, learner-centric course for primary MOS 11B30. The conduct of the course involves synchronous VL (Non-Resident), collaborative classroom learning (Resident/ADT) and hands-on learning using maneuver/training areas, ranges and/or simulators IAW the Small Group Instruction (SGI) process. It consists of progressive and sequential common core curriculum (NCO C3), select CMF 11 critical/common tasks/topics, select tactical tasks/topics and mandatory/directed training. The course culminating event(s) includes squad and platoon tactical operations with leadership evaluations.

Course Outcomes:

  • Demonstrate proficiency in NCO Common Core Competencies (NCO C3) appropriate to their level.
  • NCOs capable of operating with tactical efficiency within Army Doctrine to include as part of a combined arms element.
  • NCOs capable of applying the four professional NCO attributes: lead; train and educate; care for soldiers and equipment; maintain and enforce standards.
  • NCOs capable of adaptive and critical thinking to communicate effectively (orally or written) and take appropriate action.

Medical Training Courses

Tables I-VII, Table VIII Validation, BLS

A six- (6)-day, table-orientated course is conducted in accordance with the guidance provided in TC 8-800, Medical Education and Demonstration of Individual Competence (MEDIC). Graduates of this course will receive 48 hours of continuing educational units (CEU) (Table I-VII), skills validation (Table VIII), and Basic Lifesaver Provider certification.

Combat Lifesaver (TC3-CLS)

A four (4) day, 40 hour course that covers TC3 curriculum for issuance of the CLS certification. Through classroom instruction and hands on learning students will acquire the skills to evaluate a patient and implement interventions including tourniquet, pressure dressing, airway management, burns, fractures, and hypothermia. Graduates of the course will also be proficient in documentation and evacuation procedures. The culminating event will include a written test and trauma lane validation under direct supervision of a team of combat medics. Scheduling: By request, MIN PAX (10) / MAX PAX (25)

All Service Members (TC3-ASM)

A one- (1)-day, 8-hour course intended to introduce non-medical personnel to TC3 concepts. Graduates of the course will receive classroom instruction and hands-on learning to evaluate a patient and provide lifesaving measures such as tourniquet, pressure dressing and airway management. Scheduling: By request, MIN PAX (10) / MAX PAX (60)

A two- (2)-day, 16-hour course that provides medical personnel with an American Red Cross PALS certification. (16 CEUs).

Available by request for mission-specific trauma training or 68W Table VIII validation.

Eight (8) obstacle litter course and two-story military operations in urban terrain (MOUT) site (low crawl, low wall, high wall, tunnel, hill, crevice, Huey load).

Scheduling:

Available by request for mission-specific trauma training or 68W validation.

Instructor Courses

The Instructor Course, one of two courses that comprises the Common Faculty Development Program, is a 10-day/80-hour course designed for new faculty (e.g., instructors, trainers and facilitators).

It is a competency-based course: the learning objectives are based on internationally recognized instructor competencies published by the International Board of Standards for Training, Performance, and Instruction (IBSTPI). The course prepares new faculty to teach, train and facilitate learning in an adult learning environment. It introduces new faculty to Army instructor roles and responsibilities, teaching and learning models and professional and ethical requirements. The course also introduces classroom management techniques, the process for building learning objectives and lesson plans, and characteristics of effective communication. Throughout the course, new faculty will have an opportunity to practice teaching, working from short, simple practicum exercises to increasingly longer and more complex ones, culminating in an end of course lesson presentation.

The first half of the course focuses on characteristics of effective instructors, self-awareness of differences in teaching and learning style preferences, and fundamentals of teaching and learning as they apply to adults. The second week focuses more on application of those fundamentals in various teaching and learning practicums, with both instructor, peer and self-assessment in a collaborative learning environment. The summative assessment will occur at the end of the course and consist of an individual 30- to 50-minute practicum.

Army Doctrine (as outlined in FM 3-0 and FM 3-90-1) and foundations for tactical planning and execution to include Introduction to Army Operations, Orders, Troop Leading Procedures, Operational Terms, Defensive Operations, Offensive Operations, Graphics, Operations Order Performance Evaluation and Tactical Certification Final Examination.

Course Outcomes:

  1. Demonstrate the ability to plan U.S. Army Operations using TLPs, Defensive and Offensive Operations, Graphics and Terms, and constructing Operation Orders.
  2. Students will be qualified to train and evaluate future junior officers/cadets at the OCS level.

"Seek and Destroy"

138th Regiment Indiana Patch

The distinctive unit insignia (DUI) for the 138th Regiment symbolizes the service of the former organization, the 138th Armor Battalion. It is depicted by the golden leopard springing upon its prey, indicating the unit’s ability to move swiftly and silently while stalking its prey, then striking at the opportune moment with all the power and force at its command. It is felt that the leopard represents the animal most typical of this type of attack-powerful, silent, and swift, who by means of cunning as well as great strength is the greatest of all hunters. The eye of the leopard is emerald green, symbolic of its ability to see and hunt in the dark. Thus, the motto associated with the 138th Regiment is “Seek and Destroy.”


The lineage of the 138th Regiment can be traced back to September 1942 when it was formed as the 638th Tank Destroyer Battalion. In 1951, it was re-designated as the 138th Tank Battalion, and in June 1960 re-designated as the 138th Armor Battalion. The 138th Armor Battalion was inactivated and the colors were cased in June 1967.

The Indiana Military Academy was established in 1956 as an Officer Candidate School at Indianapolis. In December 1965, the Indiana Military Academy was moved to Camp Atterbury. After moving to Camp Atterbury, the curriculum was expanded to include Non-commissioned Officer Education Courses and Military Occupational Specialty Qualification Courses.

In 1996, the Indiana Military Academy was reorganized as part of The Army School System and given the designation as the 138th Regiment (Combat Arms). Restructured with a Headquarters and General Studies Battalion, the 138th Regiment was responsible for Combat Arms Training within a region consisting of six states: Indiana, Illinois, Ohio, Michigan, Minnesota and Wisconsin.

Today, the 138th Regiment conducts Officer Candidate School, Warrant Officer Candidate School and Combat Arms Training for Soldiers not only from Indiana but throughout the Army National Guard and Army Reserve.

Contact Us

Infantry Courses
ng.in.inarng.list.138rti-ca-11b-infantry@army.mil

Officer Candidate School
ng.in.inarng.list.138rti-ocs@army.mil

Warrant Officer Candidate School
ng.in.inarng.list.138rti-wocs@army.mil