ARTICLE 120b UCMJ Sexual Offenses Involving Children

Article 120b of the UCMJ covers sexual offenses involving children — among the most aggressively prosecuted military offenses, carrying mandatory punitive discharges, lengthy confinement, and near-certain sex offender registration. Cases typically arise from relationships discovered after age issues surface, online communications, digital images or messages, undercover sting operations, or reports from parents, schools, or civilian authorities. Even without physical contact, allegations can end a military career. For the adult sexual assault provisions, see Article 120.

Rape of a Child

Committing a sexual act on a child under 16 by:

• Force

• Threat of force

• Rendering the child unconscious

• Incapacitation

Consent is legally impossible, so cases focus on whether the act occurred.

Sexual Assault of a Child

A sexual act with a child under 16, regardless of apparent willingness or initiation. Consent is not legally possible.

Sexual Abuse of a Child

Includes sexual contact or a lewd act upon a child. Lewd acts include:

• Exposing genitalia

• Communicating sexual language

• Encouraging sexual conduct

• Other acts intended to arouse or gratify sexual desire involving a child

Physical contact is not required for all variants.

Elements the Government Must Prove

The government must prove beyond a reasonable doubt:

• The accused engaged in a sexual act, sexual contact, or lewd act

• The victim was under 16

• The conduct met the statutory definition

Consent, willingness, or initiation by the child is not a defense.

This is one of the most misunderstood aspects of Article 120b cases.

• A child cannot legally consent under Article 120b

• Mistake of age is generally not a defense, even if the child misrepresented their age

• Communications, messages, and images often become key evidence

One exception: if charged as an attempt under Article 80, mistake of age is a defense.

Common evidence sources in Article 120b cases include:

• Text messages and direct messages

• Social media platforms

• Dating apps

• Image sharing

• Undercover operations

Online communication can escalate into multiple felony-level charges even without a physical meeting. Undercover sting operations typically result in attempt charges.

Actual punishment depends on the forum — special or general court-martial — and jurisdictional caps. For a full comparison across forums, see court-martial punishments and sentencing.

Rape or Sexual Assault of a Child

Under Article 56a, a conviction for rape of a child (Article 120b(a)) or sexual assault of a child (Article 120b(b)) carries a mandatory minimum of a dishonorable discharge or dismissal. A judge cannot approve a plea agreement that waives this punitive discharge for these offenses.

• Rape of a child: Mandatory dishonorable discharge, confinement for life, total forfeiture of pay and allowances

• Sexual assault of a child: Mandatory dishonorable discharge, 30 years confinement, total forfeiture of pay and allowances

Because a special court-martial lacks jurisdiction to adjudge a dishonorable discharge or dismissal, these charges must be tried at a general court-martial.

Sexual Abuse of a Child

• Cases involving sexual contact: Dishonorable discharge or bad-conduct discharge, 20 years confinement, total forfeiture of pay and allowances

• Other cases: Dishonorable discharge or bad-conduct discharge, 15 years confinement, total forfeiture of pay and allowances

Sexual abuse of a child does not carry the Article 56a mandatory minimum.

The Manual for Courts-Martial (MCM) assigns offense categories and recommended confinement ranges. These are non-mandatory — the sentencing authority may deviate only if justified, and the lesser maximum authorized punishment always controls.

Rape or Sexual Assault of a Child

• Rape of a child: Category 5 — 240 to 480 months (20 to 40 years)

• Sexual assault of a child: Category 4 — 120 to 240 months (10 to 20 years)

Sexual Abuse of a Child

• Cases involving sexual contact: Category 3 — 30 to 120 months (2.5 to 10 years)

• Other cases: Category 3 — 30 to 120 months (2.5 to 10 years)

Undercover sting operations typically result in attempted sexual assault of a child charges under Article 80, even with no physical contact. This exposes the accused to 10 to 20 years confinement.

How Sting Operations Work

Military law enforcement runs undercover stings worldwide, posing as underage females across dating apps, messenger apps, and social media. These operations typically lead to attempted Article 120b charges.

Any “substantial step” can trigger an attempt charge under Article 80, including:

• Discussing a sexual topic

• Arranging a meetup

• Traveling to meet

Attempt charges carry the same punishment exposure as the completed offense, including sex offender registration.

Challenging Undercover Tactics

Undercover agents routinely engage in tactics that are questionable and subject to challenge. A defense attorney can challenge:

• Whether the accused actually took a substantial step

• Whether law enforcement induced or entrapped the accused

• The credibility and conduct of the undercover agent

• Whether digital evidence was properly obtained and authenticated

For a guide to your rights as an accused service member, see The Military Accused: A Strategic Guide to Your Rights and Defense in 2026. For your rights during questioning, see Article 31 Rights: A Tactical Guide. For general court-martial context, see Court Martial Meaning: The High-Stakes Reality of Military Justice.