Sometimes evidence that favors the accused does not surface until after a court-martial is over and the case is on appeal. A witness recants, a document the defense never received turns up, a forensic result is reinterpreted, or it emerges that the prosecution sat on something favorable. The military justice system has structured ways to handle exculpatory evidence discovered at this late stage, and the route depends largely on why the evidence is only now coming to light. The two main avenues are a petition for a new trial under Article 73 and the appellate courts’ own power to order fact-finding or relief.
Two different problems: suppressed evidence and newly discovered evidence
It helps to separate two situations that are often grouped together. The first is suppressed evidence: favorable, material evidence that the government had and failed to disclose. The second is newly discovered evidence: favorable evidence that nobody had at trial and that surfaces only afterward. They are handled under overlapping but distinct standards.
When the government suppressed favorable evidence, the constitutional rule of Brady v. Maryland is in play. Under Brady, the suppression by the prosecution of evidence favorable to an accused violates due process where the evidence is material to guilt or punishment, regardless of the prosecution’s good or bad faith. The government’s disclosure obligations in the military are also reinforced by the Rules for Courts-Martial and the discovery practice that governs trials. A Brady violation discovered on appeal is a legal error that the appellate court can address directly, because it goes to the fairness of the trial itself.
Petition for a new trial under Article 73
The principal mechanism for newly discovered exculpatory evidence is a petition for a new trial under Article 73, codified at 10 U.S.C. 873. After the Military Justice Act of 2016, the accused may petition the Judge Advocate General for a new trial at any time within three years after the entry of judgment under Article 60c, on the grounds of newly discovered evidence or fraud on the court. This three-year window replaced the older two-year period and runs from entry of judgment rather than from the convening authority’s action.
The standards for granting a new trial are set out in Rule for Courts-Martial 1210. A petition based on newly discovered evidence is granted only if three things are shown: the evidence was discovered after the trial; the evidence would not have been discovered by the accused or defense counsel at trial through the exercise of due diligence; and the newly discovered evidence, considered together with all the other pertinent evidence, would probably produce a substantially more favorable result for the accused. Each requirement matters. Evidence that the defense could have found with reasonable effort does not qualify, and evidence that would not likely change the outcome does not justify a new trial.
Where the petition goes
The procedural path of an Article 73 petition depends on where the case sits. If the case is pending before a Court of Criminal Appeals or before the Court of Appeals for the Armed Forces, the Judge Advocate General refers the petition to that court for action. Otherwise the Judge Advocate General acts on the petition directly. This keeps the new-evidence question with whatever body is best positioned to evaluate it in the context of the rest of the record.
The appellate court’s own powers
Appellate review in the military is unusually broad. A Court of Criminal Appeals reviews not only legal error but also the factual sufficiency of the findings within its statutory authority, and it may grant relief based on the entire record. When exculpatory evidence comes to the court’s attention, the court is not limited to a yes-or-no ruling on a cold record. It can order further proceedings to develop the facts.
The most common tool is a remand for a post-trial fact-finding hearing, often called a DuBay hearing after the case that established the practice. This kind of hearing is used when a post-trial claim turns on disputed questions of material fact that cannot fairly be resolved on conflicting affidavits alone. If the new exculpatory evidence comes wrapped in factual disputes, for example competing accounts of when it was discovered, whether it is reliable, or whether the government withheld it, the appellate court can send the case to a trial-level judge to take testimony, make credibility findings, and report back. The appellate court then decides the legal questions on a developed record rather than guessing from paper.
How the standards interact
The handling of late-surfacing exculpatory evidence reflects a balance. Finality matters, so a conviction is not reopened for evidence that merely could have helped or that the defense should have found earlier. But fairness matters more when the evidence is genuinely new and genuinely significant, or when the government concealed favorable material in the first place. That is why the new-trial standard requires both true newness with due diligence and a probable substantial effect on the result, while a Brady claim focuses on whether suppressed favorable evidence was material to the outcome. Both inquiries ask, in different words, whether the evidence is important enough to undermine confidence in the verdict.
Bottom line
Exculpatory evidence discovered during appellate review is handled through a combination of the petition for a new trial under Article 73 and Rule for Courts-Martial 1210, the constitutional disclosure rule of Brady when the government suppressed favorable material, and the appellate courts’ authority to order a post-trial fact-finding hearing to resolve disputed facts. Truly new evidence that could not have been found through due diligence and that would probably produce a substantially more favorable result can support a new trial within three years of the entry of judgment, while suppressed favorable evidence is addressed as a due-process violation. In contested situations the appellate court can remand for a hearing so the question is decided on a full record.
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.