The United States military operates on discipline, respect, and an unshakable chain of command. Any breakdown in this structure can jeopardize missions and endanger lives. UCMJ Article 91 plays a critical role in preventing such breakdowns by addressing insubordination toward warrant officers, noncommissioned officers (NCOs), and petty officers. This provision of the Uniform Code of Military Justice ensures that military authority is respected and that order is maintained at all times.
What is UCMJ Article 91?
UCMJ Article 91 prohibits service members from assaulting, disobeying, or showing disrespect toward warrant officers, NCOs, and petty officers. The law applies whether the offense happens in a formal duty setting or outside of official duties, as long as the misconduct affects good order and discipline. Unlike articles that address conduct toward commissioned officers, Article 91 specifically protects the authority of those who provide leadership at intermediate levels.
Forms of Prohibited Conduct
Under UCMJ Article 91, prohibited actions include:
- Assault – Striking, pushing, or otherwise physically attacking a superior.
- Willful Disobedience – Refusing to follow a lawful order given by a warrant officer, NCO, or petty officer.
- Disrespectful Language or Behavior – Using contemptuous words, gestures, or actions toward a superior.
Even in cases where no physical harm occurs, verbal or behavioral disrespect can still trigger charges under Article 91.
Key Elements for a Conviction
To secure a conviction under UCMJ Article 91, the prosecution must prove:

- The victim was a warrant officer, NCO, or petty officer at the time of the incident.
- The accused knew the person’s rank and position.
- The misconduct was willful, not accidental.
- The conduct occurred while the superior was in the execution of official duties (for assault and disobedience cases).
The “knowledge” element is crucial—if the accused genuinely did not know the victim’s status, that can affect the case.
Penalties for Violating UCMJ Article 91
The consequences for violating UCMJ Article 91 vary depending on the severity of the offense. Possible punishments include:
- Reduction in rank
- Forfeiture of pay and allowances
- Confinement for several months or years
- Bad-conduct or dishonorable discharge
- A permanent mark on the service member’s record
In cases involving physical violence or serious disrespect, the penalties are often much harsher.
Why Article 91 is Important
The military functions in high-stress environments where quick decisions and immediate obedience are essential. UCMJ Article 91 ensures that leaders at all levels can issue orders and maintain discipline without fear of defiance or disrespect. Without this safeguard, authority would erode, morale could decline, and mission readiness could be compromised.
Defending Against Article 91 Charges
While UCMJ Article 91 is strict, there are defenses available. These may include proving the order given was unlawful, demonstrating a lack of intent, or showing the accused was unaware of the victim’s rank. In some cases, the accused’s actions may have been justified due to self-defense or misunderstanding. Legal counsel experienced in military law is crucial when facing such charges.
Conclusion
UCMJ Article 91 reinforces the principles of respect and discipline that are essential to the U.S. military’s success. Violations can lead to life-changing consequences, both professionally and personally. Every service member should understand the seriousness of insubordination and the importance of maintaining professionalism in all interactions with superiors. By adhering to these standards, the integrity and strength of the Armed Forces remain intact.