A frequent assumption in sexual assault cases is that a dating history, a marriage, or a prior sexual relationship somehow establishes consent to a later encounter. Under Article 120 of the Uniform Code of Military Justice, that assumption is legally incorrect. The statute defines consent in a way that focuses on the specific conduct at issue, and it expressly addresses the role of a prior relationship. This article explains what the law says, why a past relationship does not by itself justify consent, and how the related concept of an honest and reasonable mistake fits in.
How Article 120 Defines Consent
Article 120, codified at 10 U.S.C. 920, defines consent as a freely given agreement to the conduct at issue by a competent person. The phrase conduct at issue is doing a great deal of work. Consent attaches to the particular sexual act in the particular moment, not to a relationship in the abstract. An expression of lack of consent through words or conduct means there is no consent, and lack of verbal or physical resistance does not by itself constitute consent.
The statute also makes clear that a person who is asleep, unconscious, or otherwise incapable of consenting, or who lacks the mental capacity to consent, cannot give consent. In those circumstances, no relationship history can supply consent the person was unable to give.
The Statute Directly Addresses Prior Relationships
Article 120 does not leave the question of a prior relationship to inference. The definition of consent specifies that a current or previous dating, social, or sexual relationship by itself does not constitute consent. The same provision states that the manner of dress of the person involved with the accused does not constitute consent either.
This language forecloses the argument that a history of intimacy, including a marriage or an ongoing relationship, automatically licenses a later sexual act. Each encounter requires consent to that encounter. A spouse, a long-term partner, or a former partner retains the legal capacity to decline, and a sexual act that proceeds without freely given agreement to that act can violate Article 120 regardless of what came before.
Why the Rule Makes Sense
The rule reflects the principle that consent is contemporaneous and specific. People in relationships consent to some encounters and not others, and the existence of a relationship does not transform every later interaction into a consented one. Treating a prior relationship as standing consent would strip individuals of the ability to decline within a relationship, which the law does not permit.
Where a Prior Relationship Can Still Matter
Although a prior relationship does not justify consent as a matter of law, it is not legally irrelevant in every respect. Evidence about the relationship can be relevant to the factual question of whether consent was actually given on the occasion in question, and it can bear on the separate question of whether the accused held an honest and reasonable mistaken belief that the other person consented.
Mistake of fact as to consent is a recognized defense theory in Article 120 cases. The idea is that if the accused actually and reasonably believed the other person was consenting, the requisite criminal state of mind may be absent. The belief must be honest, and it must be reasonable under all the circumstances as the accused understood them. A prior relationship can be part of the surrounding circumstances a fact finder considers when evaluating whether such a belief was reasonable. It does not, however, supply consent on its own, and it cannot make a belief reasonable when the other person was incapable of consenting or expressed a lack of consent.
The admissibility of evidence about a complainant’s prior sexual behavior is also tightly controlled. Military Rule of Evidence 412, often called the rape shield rule, generally excludes evidence of a victim’s other sexual behavior and sexual predisposition, subject to specific exceptions and a defined procedure. This means that even when a prior relationship is arguably relevant, counsel must navigate evidentiary rules before such evidence can be presented.
Practical Takeaways
For a service member, several points stand out. A relationship history, including marriage, does not establish consent to a particular sexual act under Article 120. Consent must be freely given to the conduct at issue, and a person who is incapacitated cannot give it. A prior relationship may be relevant to whether consent was in fact given or whether a mistaken belief in consent was reasonable, but presenting that evidence is governed by Military Rule of Evidence 412 and requires careful handling by counsel. Because these issues are intensely fact-specific, anyone facing an Article 120 allegation that involves a current or former partner should consult experienced military defense counsel.
Conclusion
A prior relationship cannot, by itself, justify consent under Article 120. The statute defines consent as a freely given agreement to the conduct at issue and states plainly that a current or previous dating, social, or sexual relationship does not by itself constitute consent. A relationship history may still inform the factual inquiry into actual consent or the reasonableness of a mistaken belief, but only within the limits set by the rules of evidence. This article provides general legal information and is not legal advice for any specific matter.
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.