UCMJ Article 131c: Misprision of a Serious Offense

Misprision of a serious offense is one of the few crimes in military law that punishes concealment rather than participation. A service member who had nothing to do with planning or committing an offense can still be convicted under Article 131c for learning that a serious crime occurred, hiding that fact, and staying silent when the law expected disclosure. The offense sits among the obstruction provisions of the Uniform Code of Military Justice because its harm is the same: it keeps a crime from reaching the authorities responsible for investigating it.

Until the 2019 restructuring of the punitive articles, this conduct was prosecuted as an enumerated offense under the general article, Article 134. The Military Justice Act of 2016 moved it to its own standalone provision, codified at 10 U.S.C. 931c, effective 1 January 2019. The relocation did not change the substance of the offense; it gave misprision a fixed article number and removed the need to plead it through the terminal element of the general article.

What the statute says

The text of Article 131c is short. Any person subject to the chapter who knows that another person has committed a serious offense, and who wrongfully conceals the commission of the offense and fails to make the commission of the offense known to civilian or military authorities as soon as possible, shall be punished as a court-martial may direct. Two ideas carry the whole offense: knowledge of a serious crime, and an act of concealment paired with a failure to report.

The pairing matters. Concealment and the failure to report are charged together, not as alternatives. The statute does not punish someone merely for declining to volunteer information, nor does it punish someone who hides a crime they never knew was serious. It reaches the person who knew, took steps to keep the crime buried, and let the reporting window pass.

The elements the government must prove

Under the Manual for Courts-Martial, the government must establish each of the following beyond a reasonable doubt:

That a certain serious offense was committed by a certain person.
That the accused knew that the person had committed the serious offense.
That, thereafter, the accused concealed the serious offense and failed to make it known to civilian or military authorities as soon as possible.

As a standalone offense in the Article 131 series, misprision carries no general-article terminal element. When the conduct was prosecuted under Article 134 before 2019, the government had to prove the added element that the conduct was prejudicial to good order and discipline or service-discrediting; the current article does not, which is one practical effect of the renumbering.

The third element does the real work. It combines an affirmative act of concealment with an omission, the failure to report. Both must be present. A bare failure to come forward, with no act of hiding the offense, does not satisfy the article. Likewise, the timing language (“as soon as possible”) frames the duty as one of reasonable promptness rather than instant disclosure.

What “serious offense” means

The article reaches only serious offenses, and the term has a defined meaning. A serious offense is one for which the maximum authorized punishment includes confinement for more than one year. That benchmark draws the line between the kind of misconduct that triggers a reporting duty and the minor disciplinary matters that do not. Concealing a crime punishable by a year or less of confinement does not support a misprision charge.

In practice this captures offenses of real gravity: violent crimes, sexual offenses, drug distribution, and similar felony-level conduct. The focus is on the punishment authorized for the underlying offense, not on how a particular case might ultimately be resolved.

Knowledge and the limits of the offense

Knowledge is the element that most often decides these cases. The government must prove actual knowledge that the serious offense occurred. Suspicion, rumor, or secondhand impressions are generally not enough. The accused must have known facts establishing that a serious offense had been committed, whether through presence at the scene, an admission by the offender, or other direct information.

Where awareness is incomplete, the analysis turns on what the accused actually understood. If a person sensed that something was wrong but did not know that a serious offense had occurred, the knowledge element may fail. If the person knew enough to conclude that a serious offense had been committed, the fact that some details were unknown does not defeat the charge.

Concealment versus silence

The article requires an affirmative step to conceal, which is what separates misprision from ordinary silence. The classic examples involve hiding or destroying evidence, providing a false account to investigators, giving the offender a false alibi, or warning the offender that an investigation is underway. Each is conduct that helps keep the crime from coming to light.

Passive silence, standing alone, does not meet this requirement. A person who simply never mentions what they know, without taking any step to bury the offense, has not concealed it in the sense the statute demands. The distinction can be factually difficult, and it frequently marks the boundary between a provable misprision and conduct that, however unsympathetic, falls outside the article.

How it differs from accessory after the fact

Misprision is easy to confuse with the offense of accessory after the fact under Article 78, but the two target different conduct. An accessory after the fact assists the offender, helping that person avoid apprehension, trial, or punishment. Misprision concerns concealment of the crime itself, by someone whose involvement does not rise to the level of aiding the offender.

A useful way to frame the line: the accessory hides the criminal, while the person guilty of misprision hides the crime. The Manual describes misprision as concealing a serious offense committed by another without the kind of prior contact with, or subsequent assistance to, the principal that would make the accused an accessory. When the conduct crosses into actively helping the offender escape consequences, the proper charge is accessory after the fact, which carries its own distinct framework.

Self-incrimination as a built-in limit

A person cannot be convicted of misprision for failing to report their own crime. Compelling someone to disclose a serious offense they themselves committed would run headlong into the privilege against self-incrimination. For that reason, the article reaches concealment of offenses committed by another person, not concealment of the accused’s own conduct. The privilege does not, however, shield a service member who conceals an offense committed entirely by someone else.

Maximum punishment

For offenses committed on or after 27 December 2023, sentencing is governed by the sentencing parameters adopted with the Military Justice Act reforms, and the military judge imposes the sentence. The maximum punishment for misprision of a serious offense is a dishonorable discharge, forfeiture of all pay and allowances, and confinement for three years. Under the current sentencing categories, the offense falls within the parameter applicable to crimes historically carrying a maximum of more than two but not more than five years’ confinement. The maximum punishment figures should always be confirmed against the current Manual for Courts-Martial, which restructured several maxima for offenses committed on or after that date.

Sources

10 U.S.C. 931c, Article 131c, Misprision of serious offense: https://www.law.cornell.edu/uscode/text/10/931c
Manual for Courts-Martial, United States, Part IV (Punitive Articles), Article 131c: https://jsc.defense.gov/Military-Law/Current-Publications-and-Updates/
10 U.S.C. 878, Article 78, Accessory after the fact: https://www.law.cornell.edu/uscode/text/10/878

This article is for general informational purposes only and is not legal advice. It describes military law and procedure of public record, does not address any individual case, and does not create an attorney-client relationship.