Overview
Military courts, known as courts-martial, are the judicial system of the United States Armed Forces. They operate under the Uniform Code of Military Justice (UCMJ), enacted by Congress under its Article I power to regulate the armed forces. The military justice system is a separate and parallel judicial system that exists alongside the civilian federal and state court systems, with its own substantive law, procedural rules, and appellate structure.
The UCMJ establishes a comprehensive criminal code for military personnel, covering offenses that range from uniquely military crimes (such as desertion, insubordination, and conduct unbecoming an officer) to general criminal offenses (such as murder, assault, and drug offenses). The UCMJ applies to all active-duty members of the armed forces, and in certain circumstances, to reservists and retirees. The Manual for Courts-Martial, promulgated by executive order, provides detailed rules of procedure and evidence for military trials.
There are three types of courts-martial, each designed for different levels of offenses. Summary courts-martial handle minor offenses and are presided over by a single commissioned officer. Special courts-martial handle intermediate offenses, with a military judge and panel (jury) of at least four members, and can impose punishments including up to one year of confinement. General courts-martial handle the most serious offenses, including those carrying potential sentences of death or lengthy imprisonment, and require a military judge and a panel of at least eight members (or the accused may elect to be tried by judge alone).
The military appellate system includes service-specific Courts of Criminal Appeals (one for each branch), the United States Court of Appeals for the Armed Forces (CAAF), and ultimately the United States Supreme Court. This appellate structure ensures civilian oversight of military justice and provides multiple layers of review for convictions.
Jurisdiction
Courts-martial have jurisdiction over all active-duty members of the armed forces for offenses under the UCMJ. This jurisdiction is personal — based on the accused's status as a member of the military — rather than territorial. The UCMJ covers uniquely military offenses (desertion, absence without leave, insubordination, conduct unbecoming an officer, dereliction of duty), general criminal offenses (murder, sexual assault, robbery, drug offenses), and a catch-all provision (Article 134) covering conduct prejudicial to good order and discipline or service-discrediting conduct. Jurisdiction may extend to certain civilians accompanying the armed forces in the field during wartime, though this has been narrowly interpreted. Courts-martial cannot try cases involving purely civilian matters unrelated to military service.
Composition
The composition depends on the type of court-martial. A summary court-martial consists of one commissioned officer. A special court-martial includes a military judge and a panel of at least four members (service members who serve a role similar to jurors). A general court-martial requires a military judge and a panel of at least eight members. The accused in a special or general court-martial may request trial by military judge alone (except in capital cases). Panel members are selected by the convening authority — typically the commanding general or equivalent — and must be senior in rank to the accused. Enlisted accused may request that at least one-third of the panel be enlisted members. Military judges are certified judge advocates (military lawyers) assigned by the Judge Advocate General of their service.
How Cases Get Here
The military justice process begins when a commander becomes aware of an alleged offense. The commander may impose nonjudicial punishment under Article 15 of the UCMJ (similar to administrative discipline) or prefer charges for a court-martial. If charges are preferred, a preliminary hearing under Article 32 (similar to a civilian grand jury proceeding) is conducted for general courts-martial to determine whether there is probable cause and whether the charges are appropriate. The convening authority — a senior military commander authorized by regulation — then decides whether to refer the charges to a court-martial and, if so, which type. Recent reforms under the Military Justice Improvement and Increasing Prevention Act have shifted charging decisions for certain serious offenses to independent military prosecutors rather than commanders.
Key Facts
Governing Law
Uniform Code of Military Justice (UCMJ), 10 U.S.C. §§ 801-946
Types of Courts-Martial
Summary, Special, and General
General Court-Martial Panel
Military judge + at least 8 panel members
Special Court-Martial Panel
Military judge + at least 4 panel members
Appellate Courts
Service Courts of Criminal Appeals, CAAF, U.S. Supreme Court
Applies To
Active-duty members of all armed forces branches
Maximum Punishment (General)
Death, life imprisonment, dishonorable discharge
Important to Know
- Courts-martial are not Article III courts — they operate under Congress's Article I power to make rules for the government and regulation of the armed forces.
- The accused in a general or special court-martial may elect to be tried by a military judge alone (without a panel), except in capital cases where a panel is required.
- The Court of Appeals for the Armed Forces (CAAF) is a civilian court — its five judges are civilians appointed by the President and confirmed by the Senate for 15-year terms, providing civilian oversight of military justice.
- Article 134 of the UCMJ is a broad catch-all provision that criminalizes conduct prejudicial to good order and discipline or service-discrediting conduct, giving it wide reach.
- Panel members (the military equivalent of jurors) are selected by the convening authority, not randomly drawn — a feature that has been criticized but upheld by courts.
- Recent statutory reforms have transferred charging authority for certain serious offenses from military commanders to independent military prosecutors, addressing concerns about command influence.
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