Article 90 and Article 91 of the Uniform Code of Military Justice both address misconduct toward those in authority, but they protect different people and apply in different ways. Article 90 concerns disobedience of a superior commissioned officer. Article 91 concerns insubordinate conduct toward warrant officers, noncommissioned officers, and petty officers. The two articles work as complementary parts of the same disciplinary structure, with the dividing line drawn largely by the rank of the person against whom the conduct is directed. This article explains how they fit together.
What Article 90 covers today
Article 90 is codified at 10 U.S.C. 890. Under its current text, any person subject to the code who willfully disobeys a lawful command of that person’s superior commissioned officer is subject to punishment. If the offense is committed in time of war, the maximum can extend to death or such other punishment as a court-martial may direct; at any other time, the punishment is such, other than death, as a court-martial may direct.
It is worth noting a change made by the Military Justice Act that took effect on January 1, 2019. Before that change, Article 90 was titled to cover both assaulting and willfully disobeying a superior commissioned officer. The assault portion was moved, and current Article 90 focuses on willful disobedience of a superior commissioned officer. The key point for this discussion is that Article 90 protects commissioned officers and addresses the refusal to obey their lawful commands.
What Article 91 covers
Article 91 is codified at 10 U.S.C. 891. By its terms, any warrant officer or enlisted member who strikes or assaults a warrant officer, noncommissioned officer, or petty officer while that person is in the execution of office, willfully disobeys the lawful order of such a person, or treats with contempt or is disrespectful in language or deportment toward such a person while that person is in the execution of office, is subject to punishment as a court-martial may direct.
Article 91 thus reaches three forms of conduct: striking or assaulting, willful disobedience, and contempt or disrespect. It protects warrant officers, noncommissioned officers, and petty officers rather than commissioned officers. The accused under Article 91 is a warrant officer or an enlisted member, not a commissioned officer, who would ordinarily be charged under other articles.
The main line of interaction: rank of the protected person
The clearest way the two articles interact is by allocating misconduct according to whom it targets. Misconduct directed at a superior commissioned officer falls within Article 90. Misconduct directed at a warrant officer, noncommissioned officer, or petty officer falls within Article 91. They are designed to fit together so that the chain of authority is protected at each level, with commissioned officers covered by Article 90 and the enlisted leadership and warrant officer ranks covered by Article 91.
This allocation explains why the two rarely overlap for the same act. A single order is given either by a superior commissioned officer or by a warrant officer, noncommissioned officer, or petty officer, and that fact channels the charge to the appropriate article. The articles are parallel rather than redundant.
A structural difference worth understanding
Beyond the rank distinction, the articles differ in how they treat the relationship between the accused and the protected person. Article 91 does not require a superior-subordinate relationship as an element. The conduct is punishable based on the status of the person as a warrant officer, noncommissioned officer, or petty officer in the execution of office, not on a formal hierarchy between accused and victim. Article 90, by contrast, is framed around disobedience of one’s superior commissioned officer.
There is also a difference in the execution-of-office requirement within Article 91 itself. The striking, assault, contempt, and disrespect provisions require that the protected person be in the execution of office at the time. The willful disobedience provision focuses on a lawful order, so the central question is the lawfulness of the order rather than the precise moment the person was performing duties.
Punishment levels and why they differ
The two articles generally carry different maximum punishments, reflecting the difference in the rank protected. Offenses against commissioned officers under Article 90 tend to carry higher maximums than corresponding conduct against the personnel protected by Article 91, and within Article 91 the maximums vary by the type of conduct and the rank of the victim. The exact maximum punishments are set out in the Manual for Courts-Martial, and a service member facing charges should confirm the current figures for the specific offense and circumstances rather than relying on a general description.
Bottom line
Article 90 and Article 91 are complementary articles that protect authority at different levels of the structure. Article 90 addresses willful disobedience of a superior commissioned officer. Article 91 addresses striking, willful disobedience, and disrespect toward warrant officers, noncommissioned officers, and petty officers, without requiring a superior-subordinate relationship. The rank of the person involved usually determines which article applies. Because the articles carry different elements and punishments, a service member facing charges under either should consult a qualified military defense attorney. This article provides general information and is not legal advice for a particular case.
Disclaimer
This article is provided strictly for general educational and informational purposes. It is intended to explain how the Uniform Code of Military Justice (UCMJ), the Rules for Courts-Martial, the Military Rules of Evidence, and related military administrative processes work as a matter of public legal education. It does not constitute legal advice, a legal opinion, or a recommendation about any particular case, and it is not a substitute for advice from a qualified military defense attorney who can evaluate the specific facts and command, service, and jurisdictional circumstances involved.
Reading this article, or contacting any website on which it appears, does not create an attorney-client relationship between the reader and any law firm, attorney, or author. Every court-martial, nonjudicial punishment action, administrative separation, and security-clearance matter turns on its own facts, the charged articles, the convening authority, the service branch, and the evidence, and outcomes vary widely from one case to another.
Military law also changes over time. The Military Justice Act of 2016 (effective January 1, 2019) and subsequent National Defense Authorization Acts renumbered and rewrote many punitive articles, revised the Article 32 preliminary hearing, and altered sentencing, clemency, and appellate procedures. Statutes, regulations, executive orders, the Manual for Courts-Martial, and decisions of the service Courts of Criminal Appeals and the Court of Appeals for the Armed Forces may have been amended, superseded, or reinterpreted after this article was written, and article numbers or procedures cited here may have changed.
For these reasons, no reader should act or decline to act based on this content without first consulting a licensed attorney experienced in military justice about their own situation. The author and publisher make no warranty, express or implied, as to the accuracy, completeness, timeliness, or current applicability of the information provided, and disclaim any liability for any action taken or not taken in reliance on it. If you are facing investigation, charges, or an adverse administrative action, time limits may apply, and you should seek qualified counsel promptly.