UCMJ Article 114 refers to "Dueling" and is a provision in the United States' Uniform Code of Military Justice. This article prohibits and punishes any person subject to military law from participating in a duel or demanding a duel. A duel is defined as a formal or informal fight between two people who have agreed to fight, usually with deadly weapons, in order to resolve a dispute.
Under Article 114, any person who participates in a duel, or who demands a duel, or who encourages, promotes, or sets up a duel, can be punished by a court-martial. Punishments may include confinement, forfeiture of pay and allowances, reduction in rank, and dismissal from military service. Additionally, the military may prosecute civilians who participate in a duel with a service member.