Article 120 of the Uniform Code of Military Justice covers rape, sexual assault, and related sexual offenses, and it produces some of the most contested courts-martial in the military justice system. A recurring question is whether character evidence, evidence about the kind of person the accused or the alleged victim is, can be used in these cases. The answer is nuanced. Some character evidence that would be allowed in an ordinary criminal case is specifically restricted in Article 120 prosecutions, while other forms of character evidence are made more available against the accused. The governing rules are the Military Rules of Evidence, and several of them interact in ways unique to sexual offense cases.
The general rule and its sexual-offense exceptions
As a baseline, Military Rule of Evidence 404 mirrors the civilian approach. It generally forbids using evidence of a person’s character to prove that the person acted in conformity with that character on a particular occasion. In other words, the prosecution normally cannot argue that the accused is a bad person and therefore probably committed the charged act. Rule 404 also recognizes traditional exceptions, including a defendant’s right in many cases to offer evidence of a pertinent good character trait, with the methods of proof governed by Military Rule of Evidence 405.
Sexual offense cases depart from that baseline in a significant way. Military Rule of Evidence 413 provides that in a court-martial in which the accused is charged with sexual assault, evidence that the accused committed one or more other offenses of sexual assault is admissible and may be considered for its bearing on any matter to which it is relevant. This is a deliberate exception to the usual prohibition on propensity evidence. It allows the government, in an Article 120 case, to introduce evidence of other sexual misconduct by the accused to show a propensity to commit such offenses, something Rule 404 would otherwise forbid.
The judge’s gatekeeping role under Rule 403
Rule 413 does not make such evidence automatically admissible. Before admitting propensity evidence under Rule 413, the military judge must apply the balancing test of Military Rule of Evidence 403, weighing the probative value of the evidence against the danger of unfair prejudice, confusion, and similar concerns. If the unfair prejudice substantially outweighs the probative value, the judge must exclude the evidence even though Rule 413 would otherwise permit it. This balancing is where much of the litigation occurs, and it requires the judge to consider factors such as how similar and how proven the other acts are and how much the government needs them.
The sharp limit on the accused’s “good military character”
One of the most important developments in this area concerns the accused’s own character evidence. Historically, a service member could offer evidence of good military character as a pertinent trait suggesting a lower probability of guilt, the so-called good soldier defense. Congress curtailed this for sexual offenses. Following the National Defense Authorization Act for Fiscal Year 2014, the President amended Military Rule of Evidence 404(a) by executive order so that general military character is not a pertinent trait for the purpose of showing the probability of innocence for enumerated offenses, which include sexual assault offenses under Article 120, unless the evidence is relevant to an element of the charged offense.
The practical effect is significant. In an Article 120 case, the accused generally cannot rely on a reputation as a fine, disciplined service member to suggest innocence. The accused may still offer character evidence that is genuinely pertinent to an element of the offense, but the broad good soldier defense is no longer available to imply that a good record makes the alleged conduct unlikely.
Evidence about the alleged victim and the rape shield rule
Character evidence about the alleged victim is tightly controlled by Military Rule of Evidence 412, the military’s rape shield rule. Rule 412 generally bars evidence offered to prove that an alleged victim engaged in other sexual behavior or to prove the alleged victim’s sexual predisposition. The purpose is to prevent trials from turning into examinations of the complaining witness’s sexual history.
Rule 412 contains narrow, carefully bounded exceptions. These include evidence of specific instances of sexual behavior offered to prove that someone other than the accused was the source of physical evidence, evidence of prior sexual behavior between the alleged victim and the accused when offered on the issue of consent, and evidence whose exclusion would violate the constitutional rights of the accused. Even when an exception might apply, the defense must follow Rule 412’s specific procedure, which requires a written motion, notice, and a closed hearing before the evidence can be admitted. The military judge decides admissibility under these standards, and the procedural requirements are strictly enforced.
Putting the rules together
In an Article 120 proceeding, character evidence is admissible, but only in particular forms and under particular conditions. Evidence of the accused’s other sexual offenses can come in against the accused under Rule 413, subject to the judge’s Rule 403 balancing. The accused’s general good military character is largely excluded as a route to suggesting innocence because of the amendment to Rule 404(a), though character evidence truly tied to an element may survive. Evidence about the alleged victim’s sexual behavior or predisposition is presumptively barred by Rule 412 and admissible only through its narrow exceptions and required procedure.
Two further points are worth noting. First, the findings phase and the sentencing phase follow different evidentiary rules, and some character evidence that is restricted on the merits may be relevant later at sentencing, where extenuation and mitigation evidence is considered. Second, even admissible character evidence is still subject to the ordinary requirements of relevance and reliable proof. Nothing in these rules permits fabricated or unsupported assertions about anyone’s character.
Bottom line
Character evidence is not categorically barred in Article 120 cases, but it is governed by a specialized and sometimes counterintuitive set of rules. The government gains a propensity tool through Rule 413 that does not exist in most prosecutions, the accused loses much of the traditional good character defense because of the Rule 404(a) amendment, and evidence about the alleged victim is heavily restricted by the Rule 412 rape shield protections. Because the admissibility of any particular piece of character evidence turns on which rule applies and on judicial balancing and procedure, a service member facing Article 120 charges should work closely with experienced military defense counsel to identify what can be offered, what can be excluded, and how to satisfy the demanding procedural requirements.
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.
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