UCMJ Article 119: Manslaughter
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Manslaughter is an unlawful killing that is not murder. Voluntary manslaughter is an intentional killing in the heat of sudden passion caused by adequate provocation, punishable by up to 15 years, or 20 if the victim is a child under 16. Involuntary manslaughter is an unintended killing by culpable negligence or during certain offenses against the person, punishable by up to 10 years, or 15 for a child under 16.
Voluntary and involuntary manslaughter in § 919
10 U.S.C. § 919 defines two offenses:
- (a) Voluntary manslaughter: a person who, “with an intent to kill or inflict great bodily harm, unlawfully kills a human being in the heat of sudden passion caused by adequate provocation.”
- (b) Involuntary manslaughter: a person who, “without an intent to kill or inflict great bodily harm, unlawfully kills a human being” by culpable negligence, or while perpetrating or attempting an offense “directly affecting the person,” other than the offenses named in Article 118(4).
Voluntary manslaughter: passion and provocation
Voluntary manslaughter has the same intent as some forms of murder, an intent to kill or inflict great bodily harm. What reduces it is provocation. The Manual for Courts-Martial (2024 ed.), Part IV, ¶ 57.c(1), sets the rules:
- Fear or rage. “Heat of passion may result from fear or rage.”
- Reasonable person. The provocation “must be adequate to excite uncontrollable passion in a reasonable person,” and the killing must be committed “under and because of the passion.”
- Not manufactured. Provocation sought or induced as an excuse for killing does not count.
- Cooling time. If, judged by a reasonable person, enough time passes between the provocation and the killing, the offense is murder “even if the accused’s passion persists.”
- Examples. Acts that may be adequate provocation, depending on the circumstances: unlawful infliction of great bodily harm, unlawful imprisonment, and one spouse’s sight of the other committing adultery. Insulting words or gestures, a slight blow with the hand or fist, and trespass or injury to property are not adequate standing alone.
Involuntary manslaughter: culpable negligence
Culpable negligence is “a degree of carelessness greater than simple negligence,” a negligent act or omission “accompanied by a culpable disregard for the foreseeable consequences to others.” Death need not be a natural and probable consequence; it is enough that the act, viewed in light of human experience, might foreseeably cause a death (¶ 57.c(2)(a)(i)). The Manual’s examples: target practice aimed toward an inhabited house within range, pointing a pistol at someone in jest and pulling the trigger without checking whether it is safe, and leaving poisons or dangerous drugs where they may endanger life.
A legal duty is required for an omission. “When there is no legal duty to act there can be no neglect”; a stranger who makes no effort to save a drowning person commits no crime (¶ 57.c(2)(a)(ii)).
An offense directly affecting the person is one affecting a particular person rather than society in general, such as assault, battery, false imprisonment, voluntarily joining an affray, and maiming (¶ 57.c(2)(b)). Deaths during burglary, rape, sexual assault, robbery, aggravated arson, and the other offenses listed in Article 118(4) are excluded because they are felony murder under Article 118.
10 to 20 years, depending on the form and the victim’s age
From ¶ 57.d:
| Offense | Victim | Maximum |
|---|---|---|
| Voluntary manslaughter | Any | Dishonorable discharge, forfeiture of all pay and allowances, 15 years |
| Voluntary manslaughter | Child under 16 | Same, 20 years |
| Involuntary manslaughter | Any | Dishonorable discharge, forfeiture of all pay and allowances, 10 years |
| Involuntary manslaughter | Child under 16 | Same, 15 years |
Knowledge that the child was under 16 is not required for the increased maximum.
Manslaughter is on the covered-offense list in 10 U.S.C. § 801(17)(A). When the killing occurred after December 27, 2023, the referral, dismissal, and plea decisions belong exclusively to a special trial counsel, who also determines whether the report is a covered offense (10 U.S.C. § 824a(c)).
Intoxication and the murder line
Under Rule for Courts-Martial 916(l)(2), voluntary intoxication is not a defense, and its Discussion adds that intoxication “may reduce premeditated murder to unpremeditated murder, but it will not reduce murder to manslaughter or any other lesser offense.” Provocation, not intoxication, is what turns an intentional killing into voluntary manslaughter.
Murder under Article 118 does not always require premeditation or an intent to kill: it also covers killing during certain felonies and killing by an act inherently dangerous to others with wanton disregard of human life. The line between those forms of murder and involuntary manslaughter is the difference between wanton disregard for life and culpable negligence. A death caused by drunken or reckless driving can also bring a charge under Article 113 for the operation itself.
Sources
- 10 U.S.C. § 919, Article 119, Manslaughter (Cornell LII)
- 10 U.S.C. § 801, Article 1, Definitions, paragraph (17) (Cornell LII)
- 10 U.S.C. § 824a, Article 24a, Special trial counsel (Cornell LII)
- Manual for Courts-Martial, United States (2024 ed.), Part IV, ¶ 57; Part II, R.C.M. 916(l)(2)
General information about military law, not legal advice for any individual case.