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Master Gunners: The Army's Endangered Experts

By Master Sgt. Jared W. Duncan

Sergeants Major Course

June 12, 2026

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Master gunners serve as critical, certified experts across several domains, including training programs, weapon systems maintenance, and ammunition control (Department of the Army [DA], 2015). (U.S. Army Reserve Photo by Spc. Britton Spencer)

The modern operational environment demands technical mastery as a baseline requirement. Maneuver brigades' lethality and readiness depend heavily on effectively employed subject matter experts (SMEs).

In this capacity, master gunners serve as critical, certified experts across several domains, including training programs, weapon systems maintenance, and ammunition control (Department of the Army [DA], 2015).

Despite their proven value, units often struggle to properly assign and use these experts. Misaligning master gunners to non-specialized positions leads to a persistent loss of experience, causing widespread degradation in crew lethality, platform expertise, and overall unit readiness.

This mismanagement undermines the Army's Master Gunner Program and conflicts with the Transformation in Contact's (TiC) emphasis on rapid, formation-level adaptation. The Army needs to recognize master gunners as a distinct military occupational specialty (MOS) with a protected career pipeline. This is critical to preserving technical mastery and sustaining lethality in TiC support.

The History and Evolution of the Master Gunner Program

The term "master gunner" originated in 14th-century England to describe shipboard gunnery team leaders, though its use declined as coastal artillery modernized (Maurice-Jones, 2012).

While these early master gunners initially held command authority, they were eventually superseded by commissioned artillery officers. Nevertheless, even under officer command, master gunners retained vital technical responsibilities, overseeing weapon maintenance, accuracy, ammunition support, and safety (Smith, 2019).

The American colonies eventually discovered this role's effectiveness, and in 1629 appointed Samuel Sharpe as the first American master gunner. While English master gunners were primarily artillery leaders, this new appointment in the Massachusetts Bay Colony became a more robust profession, with Sharpe responsible for providing powder and ammunition, cost recovery for lost weapons, and financial reporting for the costs of these items to government officials (Smith, 2019).

Three centuries later, master gunners remain vital to the U.S. Army. Evolving beyond traditional artillery, the role gained formal recognition in 1974. Addressing a critical capability gap introduced by the complex M60 tank, this evolution culminated in the modern Master Gunner Program at Fort Knox (Cameron, 2025).

As emerging technologies make platforms increasingly complex, these technical experts are essential for training crews effectively. Today, the Army must sustain this proven expertise to maintain lethality; however, a significant disconnect between this strategic requirement and the actual use of master gunners presents critical challenges.

Current Roles and Challenges

Today's master gunners operate at the intersection of doctrine, training, and weapon systems' lethal employment. Serving as command experts on direct-fire platforms, maintenance, and ammunition, they lead unit training programs and provide indispensable advise.

This image shows a Soldier instructing another Soldier on how to use a machine gun. The Soldier receiving instruction is positioned behind the weapon, which is resting on a long table. Other Soldiers can be seen in the background of the outdoor, covered area.

Although certified on specific platforms, master gunners cross-train on various augmenting systems to better support broader mission requirements. In total, they execute more than 22 foundational tasks that directly inform commanders' decision-making and drive unit readiness (DA, 2015).

Furthermore, master gunners' responsibilities are significantly expanded based on their assigned echelon. At higher levels, their duties encompass large-scale impacts, including range safety certification, modernization assessments, and quality assurance evaluations for subordinate units.

Ultimately, their sphere of influence far exceeds most NCOs' standard requirements, representing a capability that only increases in scope as they're promoted.

Transformation in Contact and Operational Tempo

The Army Warfighting Concept (AWC) identifies TiC as a critical requirement for future success, emphasizing the need to adopt and integrate technology faster. This construct places adaptation responsibility on operational formations rather than institutional processes.

As brigades compress training timelines and accelerate modernization cycles, master gunners enable it by translating emerging capabilities into executable training plans, managing ammunition resources to support rapid iteration, and naming operational risk. When properly employed, master gunners allow commanders to adapt at speed without sacrificing safety, standards, or lethality.

Despite their proven importance to the lethality culture, master gunners face persistent issues in their military careers, and operational forces face critical shortages and lack the capability to train their Soldiers accordingly.

In the Armored Brigade Combat Teams (ABCTs) alone, there are 255 assigned master gunner positions between the Abrams and Bradley master gunners, 72 of whom are currently full-time master gunners. This means that less than 29% of SMEs can perform these duties to doctrine-required levels (Office of the Chief of Armor [OCOA], personal communication, July 1, 2025).

Also, 258 more master gunner-qualified personnel currently fill key developmental (KD) positions following their professional development model requirements. Conflicting occupational requirements create a performance gap, as individuals cannot perform both leadership duties and master gunner responsibilities simultaneously without one suffering from lack of full attention.

The Army recognizes the master gunner qualification as an additional skill identifier (ASI). This means identifying specialized skills in a specific MOS that require formal institutional training.

The Army should not grant exemptions from KD assignments to fill these specialized roles, as their purpose is to offer leadership opportunities for career progression (DA, 2023). The high priority placed on master gunner roles at squadron level and above often compels less-qualified individuals to leave their KD positions prematurely to fill these vacancies.

This image shows a Soldier instructing another Soldier on the operation of a shoulder-fired weapon. The Soldier receiving instruction is holding the weapon as the instructor points to a possible target in the distance. Several other Soldiers are gathered around observing the training exercise in an open, outdoor area.

Master gunners' responsibilities are significantly expanded based on their assigned echelon. At higher levels, their duties encompass large-scale impacts, including range safety certification, modernization assessments, and quality assurance evaluations for subordinate units. (U.S. Army photo by Spc. Luis Jimenez)

The resulting lack of leadership experience is the leading cause of lower order of merit list scores in centralized board processes and is a discussion point in the operational division to understand master gunners' strategic value.

MOS Creation and Justification

To combat their improper assignment, persistent loss of continuity, and lack of experience, responsible branches must formally recognize master gunner as a distinct MOS. Realigning the position would capitalize on their expertise and knowledge, recognizing them as the Army's foremost experts.

The glide path for this new MOS would be structured similarly to the 79R Recruiter MOS, beginning with selecting proven junior leaders, sergeants and staff sergeants. Identifying and developing them early ensures only NCOs with a solid leadership and technical foundation are set on the path to becoming true SMEs.

Individuals who wish to make master gunner their primary MOS would submit the request much like recruiters, guaranteeing their primary position in the career path. This structure would help retain institutional knowledge, support unit readiness, and reduce the need to train new personnel to support training strategies.

Lastly, creating this MOS would incentivize retainability, create better opportunities for progression, and allow for proper compensation for experienced individuals.

Creating an MOS sets specific conditions for success in the master gunner community and allows for a more focused, lifelong training curriculum tailored to required duties (DA, 2018).

Like Army recruiters, the master gunner course could simply be recoded as an MOS-creating institution, awarding a secondary MOS rather than an ASI. Individuals would then complete the required service time for master gunner positions specified on Modified Tables of Organizational Equipment (MTOE) for career enhancement equal to a broadening assignment.

These positions would simply be recoded as the MOS designator assigned to the new MOS. As the positions already exist in current Tables of Equipment (TOE) and Tables of Distribution and Allowances (TDAs), this is an added benefit to the Army with a simple change in designation.

As a new MOS, responsible organizations own the doctrine updates and professional development models (PDMs) to support its required training and career progression. Since these positions already exist, and doctrine specifies required duties, the impact on doctrine editors is minimal, requiring only minor MOS wording updates.

Maintaining master gunner MOS-qualified individuals in maneuver organizations is vital to units and their success. Coding these positions at the same tier as drill sergeants and recruiters is critical to master gunners' continued success so they maintain a competitive edge with their peers, as well as remove the risk that they will be assigned to positions that do not capitalize on their specific skillsets.

This image shows a Soldier kneeling and instructing another Soldier about a rifle that is on the ground between them. Both Soldiers are wearing helmets and camouflage uniforms in an outdoor, grassy field.

Creating an MOS sets specific conditions for success in the master gunner community and allows for a more focused, lifelong training curriculum tailored to required duties (Department of the Army [DA], 2018). (U.S. Army photo by Sgt. 1st Class Justin Hardin)

The PDM would institutionalize unique career paths for master gunners designed to maintain their expertise. Treating echelons above brigade positions as nominative would be a key feature that would incentivize performance and enhance their promotion metrics in centralized boards.

An added benefit is expedited delivery of new manuals and PDMs to the force. Commanders can implement changes quickly, allowing for better forecasting of specified positions filled by Human Resources Command (HRC).

Current MTOEs allow assigning non-ASI-compatible individuals to serve in these positions as "operations NCOs.'' Local unit leaders can reassign and use these positions interchangeably based on specific personnel demands.

A dedicated MOS and PDM actively solves the issue of misassignment by locking master gunners into their designated roles. This structure secures longer tours, which builds deep expertise and ensures unit continuity.

At the personal level, this improves quality of life, allows families to settle, reduces reassignments, and incentivizes designation as master gunner, while lowering Army relocation costs. A master gunner MOS directly supports the AWC by institutionalizing an expert that enables TiC.

Unlike an ASI, an MOS provides a protected career pathway that preserves technical mastery, aligns assignments with core competencies, and sustains expertise in operational formations. The current ASI-based model undermines the capability by prioritizing MOS competitiveness over technical continuity.

Finally, formally recognizing master gunners as a specialized MOS with a specifically defined skillset enhances morale and emphasizes the position's importance in Army organizations.

Current prerequisites to attend Master Gunner School require unit commander selection and attending the Master Gunner Pre-Assessment Course (MGPAC), a highly selective course designed to identify suitable candidates.

Creating a culture that recognizes excellence and mastery is an important part of establishing lethality. Creating selective criteria assigning experienced individuals to these fields and knowing they directly influence leader decisions, emphasizes the importance of their roles and will drive them to succeed (Petty, 2024).

Conclusion

Master gunners are indispensable to lethal, safe, and ready operational division operating under TiC demands. Their gunnery, weapons employment, and training progression experience and training directly influence unit decision-makers at every echelon.

This image shows two Soldiers examining a machine gun resting on a table. One Soldier is adjusting a part of the weapon while providing instruction to the other Soldier, who is looking on intently.

Bottom line: These SMEs positively impact overall unit performance.

The Army's future capability to fight and win the nation's wars depends on its warfighters' lethality and superior firepower, and master gunners play a critical role. To enhance combat effectiveness in today's complex environment, the Army must recognize master gunners as a distinct MOS with a dedicated assignment PDM.

This adjustment would align with the AWC, preserve unit expertise, and ensure disciplined, experienced professionals drive adaptation. It would support master gunners' need for peer capabilities in the Army's current complex environment.

References

Cameron, R. S. (2025, February 10). U.S. tank gunnery: Historical ebb and flow of proficiency. U.S. Army. https://www.army.mil/article/282909/u_s_tank_gunnery_the_historical_ebb_and_flow_of_proficiency

Department of the Army. (2015). Training and Qualification, Crew. (TC 3-20.31). Washington, DC: U.S. Government Printing Office. https://armypubs.army.mil/ProductMaps/PubForm/Details.aspx?PUB_ID=105074

Department of the Army. (2018). Army Regulation 614-200: Enlisted Assignments and Utilization Management. Washington, DC: U.S. Government Printing Office. https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN44417-AR_614-200-001-WEB-2.pdf

Department of the Army. (2023). U.S. Army Noncommissioned Officer Professional Development Guide. Washington, D.C: U.S. Government Printing Office. https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN38811-PAM_600-25-000-WEB-1.pdf

Maurice-Jones, K. W. (1959). The history of coast artillery in the British Army; with a forward by Sir Cameron Nicholson. Royal Artillery Institution.

Petty, W. D. (2024, October 1). Develop future master gunners. Armor. Line of Departure. https://www.lineofdeparture.army.mil/Journals/Armor/Armor-Archive/Fall-2024-Edition/Develop-Future-Master-Gunners/

Smith, A. M. (2019, June 10). Master gunner identification badge. NCO Journal. Army University Press. https://www.armyupress.army.mil/Journals/NCO-Journal/Archives/2019/June/Master-Gunner-Identification-Badge/#:~:text=The%20Original%20Master%20Gunner

Bio

Master Sgt. Jared W. Duncan is a Sergeants Major Course, Class 76, student in Fort Bliss, Texas. He previously served as the senior military science instructor at Purdue University, and as a first sergeant in Apache Troop, 4th Squadron, 10th Cavalry Regiment, Fort Carson, Colorado. He holds a Bachelor of Arts in homeland security from American Military University and is pursuing a Bachelor of Arts in leadership and workforce development while working toward a master's in security and intelligence studies at Northeastern University.