UCMJ Article 112 Drunk on Duty vs Article 134 Drunkenness: On-Duty Intoxication vs Disorderly Intoxication
On this page: 5 sections
Article 112 is about duty: being drunk while on it, being unfit for it because of earlier drinking or drug use, or being drunk as a prisoner. The Article 134 offense is about conduct and its effect: being drunk, disorderly, or drunk and disorderly, where the circumstances make it prejudicial to good order and discipline or service discrediting. Of the two, only the Article 134 offense can reach a service member who is drunk off duty with no duty affected; on duty, Article 112 applies.
Article 112: three offenses
(a) … Any person subject to this chapter who is drunk on duty shall be punished as a court-martial may direct.
(b) … Any person subject to this chapter who, as a result of indulgence in any alcoholic beverage or any drug, is incapacitated for the proper performance of duty shall be punished as a court-martial may direct.
(c) … Any person subject to this chapter who is a prisoner and, while in such status, is drunk shall be punished as a court-martial may direct.
Source: 10 U.S.C. § 912 (Article 112).
What “on duty” means
The Manual for Courts-Martial defines duty as military duty, meaning every duty a service member “may legally be required by superior authority to execute” (MCM, Part IV, ¶ 49.c(1)(b)). Several rules follow:
- A commander actually exercising command of a post, command, or detachment in the field is constantly on duty, as is the commanding officer on board a ship.
- For others, “on duty” means duties of routine or detail, in garrison, at a station, or in the field, and not periods “known as ‘off duty’ or ‘on liberty.'”
- An officer of the day and members of the guard or watch are on duty for their entire tour.
- In a region of active hostilities, the Manual says “the circumstances are often such that all members of a command may properly be considered as being continuously on duty.”
- Standby duty counts, such as an aircrew ordered to stand by for flight or a service member ordered to stand by for guard duty (¶ 49.c(1)(c)).
Drunk on duty, 112(a)
The accused must be drunk “while actually on the duty alleged.” Getting drunk before going on duty is no defense, though it may be offered in extenuation. A service member who never takes up the duty, or who is absent from it while drunk, is outside this subsection (¶ 49.c(1)(c)). Two defenses are named: superiors knew the accused was drunk and let the accused assume the duty anyway, or the drunkenness came from an accidental overdose given for medical purposes (¶ 49.c(1)(d)).
“Drunk” has two definitions under Article 112: intoxication by alcohol “sufficient to impair the rational and full exercise of mental or physical faculties,” or an alcohol concentration of 0.08 grams per 100 milliliters of blood or 210 liters of breath, shown by chemical analysis (¶ 49.c(1)(a)).
Incapacitation for duty, 112(b)
This subsection covers the morning after. “Incapacitated” means “unfit or unable to properly perform duties as a result of previous alcohol consumption or drug use,” and illness resulting from that use is an example. The accused’s lack of knowledge of the assigned duties is an affirmative defense (¶ 49.c(2)).
Drunk prisoner, 112(c)
A prisoner who is drunk while in that status commits this offense; “prisoner” has the meaning used for Article 96 (¶ 49.c(3)).
The Article 134 offense: drunk, disorderly, or both
The elements are that the accused was drunk, disorderly, or drunk and disorderly, on board ship or elsewhere, and that the conduct was prejudicial to good order and discipline or service discrediting (MCM, Part IV, ¶ 98.b).
- Drunk uses the Article 112 definition (¶ 98.c(1)).
- Disorderly conduct is conduct “of such a nature as to affect the peace and quiet of persons who may witness it and who may be disturbed or provoked to resentment thereby,” including conduct that “endangers public morals or outrages public decency” and “any disturbance of a contentious or turbulent character” (¶ 98.c(2)).
- Service discrediting circumstances must be alleged in the specification and proved to reach the higher maximums (¶ 98.c(3)).
“Drunk and disorderly” is a single charged form of the offense, carrying higher maximums than drunkenness or disorderly conduct alone.
How the facts sort
| Article 112(a) | Article 112(b) | Article 134 (¶ 98) | |
|---|---|---|---|
| Duty required | Yes, drunk while on it | Assigned duties the accused cannot properly perform | No |
| Condition | Drunk | Incapacitated by earlier alcohol or drug use | Drunk, disorderly, or both |
| Terminal element | None | None | Prejudicial or service discrediting |
| Location factor | Not an element | Not an element | Aboard ship raises some maximums |
For example, a service member on staff duty who drinks at the desk during the shift is drunk on duty under Article 112(a). If the same service member drinks heavily the night before and shows up unable to do the job, Article 112(b) fits. Off duty, the analysis changes: a service member who gets drunk at an off-base bar and starts a shouting match with other patrons is outside Article 112, and the conduct raises the drunk and disorderly offense under Article 134, with service-discrediting circumstances if they are alleged and proved. A sentinel or lookout found drunk on post is covered by a separate article, Article 95(a). Driving while drunk is Article 113.
Maximum punishments
| Offense | Maximum (MCM, Part IV, ¶ 49.d and ¶ 98.d) |
|---|---|
| Drunk on duty | Bad-conduct discharge, forfeiture of all pay and allowances, 9 months |
| Incapacitation for duty from drunkenness or drug use | Confinement for 3 months and forfeiture of two-thirds pay per month for 3 months |
| Drunk prisoner | Confinement for 3 months and forfeiture of two-thirds pay per month for 3 months |
| Disorderly conduct, service discrediting | Confinement for 4 months and forfeiture of two-thirds pay per month for 4 months |
| Disorderly conduct, other cases | Confinement for 1 month and forfeiture of two-thirds pay per month for 1 month |
| Drunkenness, aboard ship or service discrediting | Confinement for 3 months and forfeiture of two-thirds pay per month for 3 months |
| Drunkenness, other cases | Confinement for 1 month and forfeiture of two-thirds pay per month for 1 month |
| Drunk and disorderly, aboard ship | Bad-conduct discharge, forfeiture of all pay and allowances, 6 months |
| Drunk and disorderly, service discrediting | Confinement for 6 months and forfeiture of two-thirds pay per month for 6 months |
| Drunk and disorderly, other cases | Confinement for 3 months and forfeiture of two-thirds pay per month for 3 months |
Only drunk on duty and drunk and disorderly aboard ship carry a punitive discharge among these offenses. Where every finding of guilty is for an offense committed after December 27, 2023, the military judge determines the sentence in a general or special court-martial, other than in a capital case (10 U.S.C. § 853(b)(1)).
Sources
- 10 U.S.C. § 912, drunkenness and other incapacitation offenses (Article 112)
- 10 U.S.C. § 934, general article (Article 134)
- 10 U.S.C. § 895, offenses by sentinel or lookout (Article 95)
- 10 U.S.C. § 853, findings and sentencing (Article 53)
- Manual for Courts-Martial, United States (2024 edition), Part IV, ¶ 49 and ¶ 98.
General information on Articles 112 and 134 as written and explained; nothing here judges any person’s condition or conduct. This page reflects the UCMJ as amended through Public Law 119-60 (December 18, 2025) and the Manual for Courts-Martial (2024 edition) as amended by Executive Order 14130.