Article 91 UCMJ Explained: What Military Personnel Need to Know

Article 91 UCMJ prohibits certain forms of insubordinate conduct toward warrant officers, noncommissioned officers, and petty officers. It covers assault, willful disobedience of a lawful order, contempt, and disrespect.

An allegation under this article can affect a service member’s rank, pay, freedom, and military career. However, not every disagreement, delayed response, or rude comment proves an Article 91 violation. The government must establish specific facts for the charged offense.

What Does Article 91 UCMJ Cover?

Article 91 is part of the Uniform Code of Military Justice, or UCMJ. The UCMJ is the federal body of law that governs military discipline and criminal proceedings for people who are subject to military jurisdiction.

Under the statute, a warrant officer or enlisted member may violate Article 91 through one of three types of conduct:

• Striking or assaulting a warrant officer, noncommissioned officer, or petty officer while that person is carrying out official duties
• Willfully disobeying a lawful order from one of those officers
• Showing contempt or acting disrespectfully toward one of those officers while that person is carrying out official duties

The statute permits punishment as directed through the court-martial process.

These are separate offenses. The facts that must be proven in an assault case are not identical to those required in an order-disobedience or disrespect case.

Who Can Be Charged Under Article 91?

The accused must generally be a warrant officer or an enlisted member. Article 91 does not use the broader wording found in some other UCMJ provisions that apply to any person subject to military law.

The person affected by the alleged conduct must be one of the following:

• A warrant officer
• A noncommissioned officer, commonly called an NCO
• A petty officer

The Manual for Courts-Martial also states that the accused must have actual knowledge of the other person’s status. That knowledge does not always require a direct statement. It may be established through surrounding facts, such as rank insignia, prior interactions, duty assignments, or the circumstances of the incident.

Article 91 does not require a superior-subordinate relationship for every offense. However, the punishment and required elements may differ when the alleged victim was the accused’s superior NCO or petty officer.

What Must the Government Prove?

The required elements depend on which part of UCMJ Article 91 is charged. Prosecutors must prove every required element beyond a reasonable doubt at a court-martial.

Striking or Assaulting an Officer

For an allegation involving physical conduct, the government generally must establish that:

• The accused was a warrant officer or enlisted member
• The accused struck or assaulted a warrant officer, NCO, or petty officer
• The alleged victim was carrying out official duties at the time
• The accused knew the person held the protected military status

Additional elements apply when the alleged victim was the accused’s superior NCO or petty officer. The government must then establish that the victim held that superior position and that the accused knew it.

An assault does not always require a completed physical injury. The exact meaning can depend on military assault law, the actions involved, and whether the conduct created an unlawful threat or use of force.

Willfully Disobeying a Lawful Order

For an order-disobedience charge, the government generally must prove that:

• The accused was a warrant officer or enlisted member
• A warrant officer, NCO, or petty officer gave a specific lawful order
• The accused knew the status of the person giving the order
• The accused had a duty to obey it
• The accused willfully disobeyed the order

“Willfully” is important. It refers to intentional defiance of authority. A failure caused by misunderstanding, forgetfulness, inability, or negligence may not establish willful disobedience, although the facts could raise other disciplinary concerns.

The order must also be lawful. Whether it was lawful can depend on its purpose, clarity, connection to military duty, and consistency with controlling law. The Manual for Courts-Martial directs decision-makers to examine matters such as lawfulness, form, transmission, specificity, and the time allowed for compliance.

Contempt or Disrespect

Disrespect may involve words, gestures, tone, conduct, or deliberate omissions. The issue is not simply whether someone was impolite. The surrounding military setting and the meaning communicated by the conduct matter.

The government generally must show that:

• The accused was a warrant officer or enlisted member
• The accused used certain language or engaged in specific conduct
• The behavior was directed toward and within the sight or hearing of the officer
• The accused knew the person was a warrant officer, NCO, or petty officer
• The officer was carrying out official duties
• The language or conduct amounted to contempt or disrespect under the circumstances

When the person was the accused’s superior NCO or petty officer, that relationship and the accused’s knowledge of it become additional elements.

What Does “In the Execution of Office” Mean?

For assault and disrespect offenses, Article 91 generally requires that the affected officer was acting in the execution of official duties.

This can include carrying out assigned military responsibilities, supervising personnel, maintaining discipline, giving instructions, or performing another authorized function. The question is highly dependent on the facts.

An officer’s conduct may become relevant when determining whether that person was still acting within an official role. A personal disagreement that has no real connection to military duties may present different legal issues from an incident during an official formation, inspection, watch, or duty assignment.

However, service members should not assume that an order loses its official character merely because they disagree with the officer’s tone, reasoning, or management style.

What Are the Maximum Punishments?

The maximum authorized punishment depends on the type of Article 91 UCMJ offense and the status of the other person. The 2024 Manual for Courts-Martial lists the following maximums:

• Striking or assaulting a warrant officer: Dishonorable discharge, forfeiture of all pay and allowances, and confinement for five years
• Striking or assaulting a superior NCO or petty officer: Dishonorable discharge, forfeiture of all pay and allowances, and confinement for three years
• Striking or assaulting another NCO or petty officer: Dishonorable discharge, forfeiture of all pay and allowances, and confinement for one year
• Willfully disobeying a warrant officer’s lawful order: Dishonorable discharge, forfeiture of all pay and allowances, and confinement for two years
• Willfully disobeying an NCO’s or petty officer’s lawful order: Bad-conduct discharge, forfeiture of all pay and allowances, and confinement for one year
• Contempt or disrespect toward a warrant officer: Bad-conduct discharge, forfeiture of all pay and allowances, and confinement for nine months
• Contempt or disrespect toward a superior NCO or petty officer: Bad-conduct discharge, forfeiture of all pay and allowances, and confinement for six months
• Contempt or disrespect toward another NCO or petty officer: Forfeiture of two-thirds pay per month for three months and confinement for three months

These are maximum authorized punishments, not automatic sentences. The court-martial type, charging decisions, evidence, service record, aggravating facts, mitigating evidence, plea terms, and other circumstances can affect the possible outcome.

How Is Article 91 Different From Articles 89, 90, and 92?

Several UCMJ provisions involve military authority, orders, and disrespect. The proper charge depends partly on the rank of the other person and the conduct involved.

Article 89 addresses disrespect toward a superior commissioned officer and assault of a superior commissioned officer.

Article 90 addresses willful disobedience of a lawful command from a superior commissioned officer.

Article 91 focuses on conduct involving warrant officers, NCOs, and petty officers.

Article 92 addresses failure to obey lawful general orders or regulations, failure to obey certain other lawful orders, and dereliction of duty. It can apply even when the person giving an order does not fall into an Article 91 category.

The difference is more than a technical label. Each article has its own elements, scope, and possible punishment.

Can Article 91 Lead to an Article 15 Instead of a Court-Martial?

A command may consider nonjudicial punishment under Article 15 for alleged misconduct. Article 15 allows commanding officers to impose certain disciplinary measures without conducting a court-martial. The exact process, available choices, and possible punishment depend on the service member’s status, location, command, and applicable regulations.

An allegation may also lead to counseling, a reprimand, adverse evaluation action, administrative separation proceedings, or a court-martial. No single outcome applies to every Article 91 allegation.

A service member should understand the consequences before deciding whether to accept nonjudicial punishment, submit a statement, waive a right, or make a formal election.

What Defenses May Apply to an Article 91 Charge?

A defense depends on the charged conduct and available evidence. Potential issues may include:

• The order was not lawful
• The accused did not hear or understand the order
• The accused lacked a duty to obey it
• The conduct was not willful
• The accused did not know the other person’s military status
• The officer was not acting in the execution of official duties
• The alleged language was not directed toward the officer
• The incident did not amount to assault, contempt, or disrespect
• Physical contact was accidental or legally justified
• Witness accounts are inconsistent
• Video, messages, or documents contradict the allegation
• The charge identifies the wrong UCMJ article

Context can be critical. Tone, distance, noise, operational conditions, medical issues, prior instructions, and the sequence of events may affect how the evidence is understood.

A defense should be based on the actual evidence rather than a general explanation found online.

What Should a Service Member Do After an Allegation?

Do not delete text messages, videos, emails, duty records, or social media content connected to the incident. Preserve the material in its original form and write down the names of witnesses while the event is still fresh.

Avoid contacting witnesses to influence what they say. Do not post details about the allegation online or discuss defense strategy with people who do not have a confidential legal relationship with you.

Article 31 protects service members against compelled self-incrimination. A person suspected of an offense must generally be informed of the nature of the accusation, the right not to make a statement, and the possibility that a statement may be used as evidence at a court-martial.

Speaking with qualified military defense counsel before making a detailed statement can help a service member understand the allegation, preserve evidence, and avoid decisions based on incomplete information.

Does Florida Law Change Article 91?

No. Article 91 is part of federal military law. Its core requirements do not change because a service member is stationed in Jacksonville, Pensacola, Tampa, another Florida community, or outside the United States.

Local facts may still matter. Witnesses, records, command structure, duty status, and the location of the incident may affect the investigation and defense. However, a Florida civilian criminal case and a UCMJ proceeding are separate legal systems.

Get the Right Legal Help for Your Situation

An Article 91 UCMJ allegation can affect a service member’s rank, military record, and career. Anyone facing an investigation, Article 15 proceeding, or court-martial should speak with a qualified military defense attorney about the possible punishment, available defenses, and the strengths and weaknesses of the government’s case.

Tucker Law Group represents qualifying civilian contractors in Defense Base Act claims involving overseas work-related injuries and occupational illnesses. The firm also handles Longshore and Harbor Workers’ Compensation Act claims, Florida workers’ compensation, personal injury, Social Security Disability, and hearing loss matters. If your situation involves an overseas work injury, maritime employment, a Florida workplace accident, or a disability claim, contact Tucker Law Group to discuss the legal options that may apply.

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