The United States and Brazil are the two largest countries in the Americas, and both maintain dedicated systems of military law. The systems differ in their sources, their courts, and the controversies that surround them. The American system is built on a single congressional code, the Uniform Code of Military Justice, enforced through commander-convened courts-martial. The Brazilian system rests on a Military Penal Code dating from 1969 and a permanent military judiciary that culminates in a Superior Military Court (Superior Tribunal Militar), one of the oldest courts in the country. Comparing the two reveals different relationships between military justice and a nation’s broader constitutional and historical experience.
The American framework: the UCMJ and courts-martial
In the United States, military law is consolidated in the Uniform Code of Military Justice, or UCMJ, enacted by Congress and codified in Title 10 of the United States Code. The UCMJ applies to members of all the armed forces and contains both military-specific offenses, such as desertion and disobedience of orders, and ordinary crimes, such as theft, assault, and murder, that can be tried under military jurisdiction.
The UCMJ is implemented through the Manual for Courts-Martial, a presidential document supplying the Rules for Courts-Martial and the Military Rules of Evidence. Article 16 sets out three tiers of court-martial, summary, special, and general. A general court-martial consists of a military judge and a panel of members, with the accused entitled to elect a judge-alone trial. The 2016 Military Justice Act, reflected in the 2019 edition of the Manual, fixed statutory panel sizes and modernized voting and sentencing.
The American system is administered internally by the military, applies jurisdiction based on military status across a wide range of offenses, and provides appellate review through the service Courts of Criminal Appeals to the civilian Court of Appeals for the Armed Forces, with possible Supreme Court review.
The Brazilian framework: a 1969 code and a permanent military judiciary
Brazil’s military justice (Justiça Militar) is distinctive in part because of its age and its constitutional standing. Brazil traces a military judicial body back to the early nineteenth century, and the modern Superior Military Court (Superior Tribunal Militar), headquartered in Brasilia, descends from that lineage, making it one of Brazil’s oldest standing courts. Unlike the American model, where courts-martial are convened as needed by commanders, Brazil maintains a permanent, standing military judiciary that is recognized in the Federal Constitution as part of the national court system.
The substantive law is set out in the Military Penal Code (Codigo Penal Militar), enacted as Decree-Law No. 1,001 of October 21, 1969, during the period of military government, with a companion Code of Military Criminal Procedure. The organization of the federal military justice is governed by separate legislation. The federal Military Justice tries crimes defined as military crimes under the Military Penal Code, principally those committed by members of the armed forces, and it operates through trial-level military judges and councils up to the Superior Military Court at the apex.
A further feature without a clean American analogue is the role of military justice at the state level. In Brazil, the state-level military police and military firefighter corps are themselves military institutions, and several states maintain their own military courts to try military crimes committed by these state forces, separate from the federal Military Justice that handles the armed forces. This dual federal-and-state military justice structure has no direct counterpart in the United States.
Scope of jurisdiction and the question of military crimes
A central contrast lies in how each system defines what falls within military jurisdiction.
The American UCMJ ties jurisdiction primarily to military status, so a service member can be tried by court-martial for ordinary crimes as well as military ones. The nature of the offense is less important than the status of the accused.
The Brazilian system turns heavily on the legal concept of a military crime (crime militar) as defined in the Military Penal Code. Whether a given act is a military crime, and therefore tried in the military courts rather than the ordinary criminal courts, depends on statutory criteria tied to the nature of the conduct, the status of the offender, and the circumstances. This definitional gateway has been the source of significant legal and political debate in Brazil, particularly where the conduct of military or military-police personnel against civilians is concerned, because the classification determines whether a case goes to a military court or an ordinary jury court. The boundary of military-crime jurisdiction has been adjusted by legislation over time and remains a contested and evolving area, which readers should treat as unsettled.
History, independence, and ongoing criticism
The two systems carry different historical weights.
American military justice has been reformed repeatedly by Congress, most significantly with the creation of the UCMJ in 1950 and again through the 2016 Military Justice Act and subsequent measures shifting certain prosecution decisions to independent special trial counsel. Independence is safeguarded through tenured military judges during trials, independent defense counsel, prohibitions on unlawful command influence, and civilian appellate review.
Brazil’s Military Penal Code dates from 1969, a period of military rule, and that origin is itself a recurring subject of criticism. Commentators have questioned the legitimacy and modernity of a core criminal code enacted by a military government rather than by a fully representative legislature, and have criticized the handling of certain historical cases within the military justice system. At the same time, Brazil’s return to democracy brought the military judiciary firmly within the constitutional order, with the Superior Military Court functioning as a constitutionally recognized superior court and decisions ultimately subject to the constitutional jurisdiction of the Supreme Federal Court (Supremo Tribunal Federal) on constitutional questions. The tension between an old, dictatorship-era code and a modern democratic constitution is a defining feature of the Brazilian system.
Appeals and ultimate review
In the United States, appeals run from a service Court of Criminal Appeals to the Court of Appeals for the Armed Forces and potentially to the Supreme Court, a structure that stays within military and specialized courts before reaching the civilian apex.
In Brazil, trial-level military proceedings are reviewed by the Superior Military Court, which sits at the top of the federal military judiciary as a standing court. Constitutional questions can ultimately reach the Supreme Federal Court, Brazil’s highest court. The Brazilian appellate structure thus features a permanent superior military court as its specialized apex, integrated into a national judiciary capped by the Supreme Federal Court.
What the comparison reveals
Placed side by side, the systems reflect different national stories. The United States organizes military justice around military status, administers it through commander-convened courts-martial reformed by an active legislature, and tops it with civilian appellate review. Brazil organizes military justice around the statutory concept of military crime, administers it through a permanent military judiciary led by one of the country’s oldest courts, splits it across federal and state levels, and continues to debate the legitimacy and reach of a core code inherited from a period of military rule.
For a comparative reader, Brazil is notable for the permanence and antiquity of its military judiciary, for its unusual federal-and-state dual military justice structure, and for the lively, ongoing controversy over the scope of military-crime jurisdiction and the dictatorship-era origins of its Military Penal Code. The American model answers the need for military discipline with a frequently reformed congressional code and ad hoc courts-martial, while Brazil answers it with a standing, constitutionally entrenched military judiciary still working to reconcile its history with its democracy.
Disclaimer
This article is provided strictly for general educational and informational purposes. It is intended to explain how the Uniform Code of Military Justice (UCMJ), the Rules for Courts-Martial, the Military Rules of Evidence, and related military administrative processes work as a matter of public legal education. It does not constitute legal advice, a legal opinion, or a recommendation about any particular case, and it is not a substitute for advice from a qualified military defense attorney who can evaluate the specific facts and command, service, and jurisdictional circumstances involved.
Reading this article, or contacting any website on which it appears, does not create an attorney-client relationship between the reader and any law firm, attorney, or author. Every court-martial, nonjudicial punishment action, administrative separation, and security-clearance matter turns on its own facts, the charged articles, the convening authority, the service branch, and the evidence, and outcomes vary widely from one case to another.
Military law also changes over time. The Military Justice Act of 2016 (effective January 1, 2019) and subsequent National Defense Authorization Acts renumbered and rewrote many punitive articles, revised the Article 32 preliminary hearing, and altered sentencing, clemency, and appellate procedures. Statutes, regulations, executive orders, the Manual for Courts-Martial, and decisions of the service Courts of Criminal Appeals and the Court of Appeals for the Armed Forces may have been amended, superseded, or reinterpreted after this article was written, and article numbers or procedures cited here may have changed.
For these reasons, no reader should act or decline to act based on this content without first consulting a licensed attorney experienced in military justice about their own situation. The author and publisher make no warranty, express or implied, as to the accuracy, completeness, timeliness, or current applicability of the information provided, and disclaim any liability for any action taken or not taken in reliance on it. If you are facing investigation, charges, or an adverse administrative action, time limits may apply, and you should seek qualified counsel promptly.