UCMJ Article 120a: Mailing Obscene Matter

Most service members never think twice about dropping a letter or package in the mail. Article 120a of the Uniform Code of Military Justice draws a sharp line, however, around one narrow category of mailing: the deposit of obscene material into the postal system. The offense is not about explicit content in the abstract. It targets the deliberate act of placing obscene matter into the mail for delivery, conduct that federal law has long treated as criminal and that the military prosecutes when it harms good order and discipline or discredits the armed forces.

This article was renumbered as part of the Military Justice Act of 2016, which took effect on January 1, 2019. Conduct that earlier generations of the Manual for Courts-Martial addressed as an enumerated Article 134 offense now appears as a standalone punitive article. The change moved the offense into 10 U.S.C. 920a but did not alter its core: a service member who wrongfully and knowingly deposits obscene matter for mailing and delivery may be tried by court-martial.

What the statute covers

Article 120a applies to any person subject to the UCMJ who places obscene matter into the mail. The prohibited material may take many forms, including letters, writings, photographs, films, drawings, or recordings. The medium is not the point. What matters is whether the material is legally obscene and whether the accused knowingly and wrongfully deposited it for mailing and delivery. The statute reaches both the United States Postal Service and military postal channels such as APO and FPO addresses.

Elements the government must prove

To obtain a conviction under Article 120a, the prosecution must establish each of the following beyond a reasonable doubt:

  1. That the accused wrongfully and knowingly deposited certain matter, or caused it to be deposited, in the mail for mailing and delivery.
  2. That the matter deposited was obscene.

Knowledge is central. The government must show the accused knew the nature of the material and acted wrongfully, meaning without legal justification or excuse. The question of whether matter is obscene is decided as a question of fact, applying the constitutional standard the Supreme Court set in Miller v. California: whether the average person, applying contemporary community standards, would find that the material appeals to the prurient interest; whether it depicts sexual conduct in a patently offensive way; and whether it lacks serious literary, artistic, political, or scientific value.

Maximum punishment

The maximum punishment for a violation of Article 120a is a dishonorable discharge, forfeiture of all pay and allowances, and confinement for three years, as set out in Part IV of the Manual for Courts-Martial. As with all UCMJ offenses, the actual sentence imposed in any given case is determined by the court-martial within the lawful ceiling, and sentencing procedures differ for offenses committed on or after December 27, 2023, when revised sentencing rules under the Military Justice Act took effect.

Defenses

Several defenses may apply depending on the facts. The most common is that the material was sexually explicit but not legally obscene, since explicit content that retains serious value or does not meet the Miller test falls outside the statute. Lack of knowledge is another, because the offense requires that the accused knew the character of the matter deposited. An absence of wrongfulness, such as material handled for a legitimate official, medical, or evidentiary purpose, may also defeat the charge. The government bears the burden of proving each element, including obscenity, beyond a reasonable doubt.

Distinctions from related offenses

Article 120a is narrow and should not be confused with neighboring provisions. It is distinct from Article 109a, which addresses the wrongful taking, opening, secreting, destroying, or stealing of mail matter and protects the integrity of the postal system rather than regulating the content sent. It is also separate from offenses involving child sexual abuse material, which are charged under other statutes carrying far heavier consequences. Conduct involving indecent language directed at a person may instead implicate Article 134. The defining feature of Article 120a is the combination of legally obscene material and the act of depositing it into the mail.

Frequently asked questions

What makes material legally obscene?
Obscenity is judged under the Miller standard. The material must appeal to the prurient interest, depict sexual conduct in a patently offensive manner under contemporary community standards, and lack serious literary, artistic, political, or scientific value. Sexually explicit material that retains serious value is generally not obscene.

Does Article 120a apply to military mail systems overseas?
Yes. The offense reaches mail deposited in United States Postal Service channels as well as military postal systems, including APO and FPO addresses. The UCMJ applies worldwide to those subject to it.

Is mailing obscene material protected by the First Amendment?
No. The Supreme Court has held that obscenity, as defined under the Miller test, is not protected speech. Material that meets that strict definition may be regulated and, in the military context, prosecuted under Article 120a.

How is this different from simply possessing explicit material?
Article 120a punishes the act of depositing obscene matter into the mail, not mere private possession. The offense centers on placing such material into the postal system for delivery.

What is the maximum confinement for this offense?
The maximum confinement is three years, alongside a dishonorable discharge and forfeiture of all pay and allowances, as provided in the Manual for Courts-Martial.

Sources

10 U.S.C. 920a, Article 120a, Mails: deposit of obscene matter: https://www.law.cornell.edu/uscode/text/10/920a

Manual for Courts-Martial, United States (2024 edition), Part IV: https://jsc.defense.gov/Portals/99/2024%20MCM%20files/MCM%20(2024%20ed)%20(20240102)%20(adjusted%20bookmarks).pdf

Miller v. California, 413 U.S. 15 (1973): https://supreme.justia.com/cases/federal/us/413/15/

Military Attorney Joseph L. Jordan, Articles of the UCMJ

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.

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