Article 31 Rights: Military Self-Incrimination Protections, and How They Differ from Miranda
On this page
Article 31 of the Uniform Code of Military Justice is four subsections long. Three of them are about compulsion, and only one is the warning that people have heard of. Reading the article in order is the fastest way to see why the military rule is not a uniformed version of Miranda.
This page sets out the four subsections in the statute’s own words, identifies what each one prohibits, and then places the military rule beside the civilian one to show where the two actually diverge. The divergence is not a matter of emphasis. The two rules attach at different moments, to different people, for different reasons.
It does not tell you whether a warning was required in any particular exchange, or whether a statement can be kept out of evidence. Those turn on the facts of the exchange, and on a body of case law this page reaches only through the military appellate court’s own summary of it.
The four subsections, in the order Congress wrote them
Article 31 is codified at 10 U.S.C. 831. Each subsection does separate work, and they are frequently described as though there were only one.
“(a) No person subject to this chapter may compel any person to incriminate himself or to answer any question the answer to which may tend to incriminate him.”
Source: 10 U.S.C. 831 (Article 31), subsection (a).
That is the substantive right. It is a prohibition on compulsion, it binds every person subject to the Code, and it protects any person, not only an accused. Nothing in it depends on a warning being given or withheld.
“(b) No person subject to this chapter may interrogate, or request any statement from, an accused or a person suspected of an offense without first informing him of the nature of the accusation and advising him that he does not have to make any statement regarding the offense of which he is accused or suspected and that any statement made by him may be used as evidence against him in a trial by court-martial.”
Source: 10 U.S.C. 831 (Article 31), subsection (b).
This is the advisement, and it contains three components rather than two: the nature of the accusation, the advice that the person need not make a statement, and the warning that a statement may be used as evidence. The first of the three has no counterpart in the Miranda warning at all.
Note also what triggers it in the text: interrogating or requesting any statement from an accused or a suspect. A request for a statement is covered in the same breath as an interrogation.
“(c) No person subject to this chapter may compel any person to make a statement or produce evidence before any military tribunal if the statement or evidence is not material to the issue and may tend to degrade him.”
Source: 10 U.S.C. 831 (Article 31), subsection (c).
Subsection (c) is a separate protection and it is narrow. It has two conditions joined by and: the material must be immaterial to the issue and tend to degrade the person. It is not a general dignity provision, and it applies before a military tribunal rather than everywhere.
“(d) No statement obtained from any person in violation of this article, or through the use of coercion, unlawful influence, or unlawful inducement may be received in evidence against him in a trial by court-martial.”
Source: 10 U.S.C. 831 (Article 31), subsection (d).
Subsection (d) is the consequence. It reaches statements obtained in violation of the article and, separately, statements obtained through coercion, unlawful influence or unlawful inducement, which are listed as independent routes to exclusion.
Where the article came from
Article 31 was not drafted for the 1956 code. The United States Code records its source as the 1950 Act:
The entry for this article traces to May 5, 1950, ch. 169, §1 (Art 31), 64 Stat. 118, and the article as it now stands was enacted on Aug. 10, 1956, ch. 1041, 70A Stat. 48.
Two facts follow from those dates, and both matter when the military rule is compared with the civilian one.
Article 31 came first, and it came from Congress. The warning requirement was already federal statutory law, enacted in 1950, before the Supreme Court announced the civilian warning. We did not open the Miranda decision, so this page states no date for it and quotes nothing from it; the comparison below rests on the statutory text and on the structural difference between a statute and a judicial decision.
The 1956 recodification changed wording, not substance, and said so. The revision notes for this article record that “the word ‘may’ is substituted for the word ‘shall’ throughout the revised section.” If you compare a 1950 text against the current one and find the verbs differ, that note is the explanation.
How it differs from Miranda
Four differences, and each one is a difference in kind rather than degree.
Source. Article 31 is a statute passed by Congress. The Miranda warning is a rule announced by the Supreme Court as a safeguard for the Fifth Amendment privilege. One can be amended by legislation; the other cannot.
Trigger. Miranda attaches to custodial interrogation: a person must be in custody and subject to interrogation. Article 31(b) contains no custody requirement. Its text attaches to interrogating or requesting a statement from “an accused or a person suspected of an offense”, and suspicion is a status that can exist long before anyone is restrained. The military appellate court draws the same line:
“Article 31(b), UCMJ, warnings must be given to anyone suspected of an offense while Miranda warnings only need to be given to those subject to custodial interrogation”
Source: Court of Appeals for the Armed Forces digest, citing United States v. Flanner (2023). The words above are the digest’s own statement of the holding, not a quotation from the opinion, which was not opened.
So on this axis Article 31(b) is the broader rule, and on the official-capacity axis it is the narrower one. The two rules are not nested; they cut across each other.
Who is bound. Miranda governs law enforcement. Article 31(b) opens with “No person subject to this chapter”, which is the same phrase Article 2 defines. On its face the prohibition binds every person subject to the Code, not only investigators. The applied rule is narrower than that, and the narrowing comes from military appellate case law rather than from the statute.
The Court of Appeals for the Armed Forces states the elements of the warning duty in four parts:
“Article 31(b), UCMJ, warnings are required when (1) a person subject to the UCMJ, (2) interrogates or requests any statement, (3) from an accused or person suspected of an offense, and (4) the statements regard the offense of which the person questioned is accused or suspected.”
Source: United States Court of Appeals for the Armed Forces, Daily Journal digest, Confessions and Admissions, citing United States v. Metz (2023). The words above are the digest’s own statement of the holding, not a quotation from the opinion, which was not opened.
On top of those four, the court asks a fifth question about the questioner’s role:
“whether the military questioner was acting or could reasonably be considered to be acting in an official law-enforcement or disciplinary capacity”
Source: same digest, citing United States v. Ramos (2016). The determination is made on the totality of the circumstances at the time of questioning. The words above are the digest’s own statement of the test, not a quotation from the opinion, which was not opened.
Read that second test carefully, because it is doing the work the statute’s words do not. The phrase “could reasonably be considered to be acting” means the question is not simply what the questioner privately intended. A person can fall inside the duty without having set out to investigate anything.
Content. The Article 31(b) advisement includes the nature of the accusation. The Miranda warning does not include an equivalent, and that component gives a person being warned under Article 31 information that a civilian suspect does not automatically receive.
One thing the two rules share is worth stating plainly: neither of them makes a statement inadmissible merely because it was damaging. Both are about the conditions under which it was obtained.
What Article 31 is not
It is not an interview procedure, and it does not say how questioning must be conducted once a warning has been given.
It is not the right to counsel. Article 31 says nothing about a lawyer. The counsel right in a military case comes from elsewhere in the Code and from constitutional law, and the right to a military defense lawyer sets out the statutory side of it.
It is not a rule about administrative questioning generally. An investigation that is not looking at a person as a suspect sits differently, which is the intersection AR 15-6 investigations runs into when an inquiry turns from fact-finding toward a particular individual.
And it is not the only exclusionary rule in a court-martial. Subsection (d) is one route by which evidence is kept out; the Military Rules of Evidence contain others, and how an exclusion is actually argued belongs to pretrial motions.
What follows when the article applies
The statute creates duties on one side and consequences on the other, and they are not symmetrical.
A duty to advise, before questioning. The obligation in subsection (b) runs to the questioner and it is prior: the informing comes “first”, before the interrogation or the request.
No duty to answer. The advisement itself states that the person “does not have to make any statement regarding the offense”. That is the content of the warning rather than an inference from it.
An evidentiary consequence, not an automatic one. Subsection (d) provides that a statement obtained in violation “may not be received in evidence against him in a trial by court-martial.” Whether a particular statement falls inside that sentence is decided in the case, on the facts, by a military judge.
A boundary the statute does not draw. Article 31 does not say what counts as an interrogation, when suspicion begins, or when a questioner is acting officially. Those are the questions that decide most real disputes, and the statute leaves every one of them to be worked out elsewhere.
What this page does not decide
Whether a warning was owed in a particular conversation. That depends on who was asking, in what capacity, and what they already suspected.
Whether a statement can be suppressed. Subsection (d) sets a rule; applying it requires evidence about how the statement was obtained.
What the courts have held these words to mean. The decisions interpreting Article 31, including those on the official-capacity limitation, were not opened for this page, and the statutory text alone does not supply them.
Anyone who has been questioned, or who expects to be, has a specific question about their own facts. That question belongs to a qualified defense counsel, and nothing here substitutes for one.
Where to go from here
The phrase “no person subject to this chapter” is defined by Article 2, and who is subject to the UCMJ works through the fourteen categories. For where questioning sits in the sequence of a case, what happens before a court-martial sets out the stages in order.
Sources
The article is quoted in full above, subsection by subsection, from the United States Code.
- 10 U.S.C. 831 · Article 31, Compulsory self-incrimination prohibited · all four subsections
- 10 U.S.C. 802 · Article 2, Persons subject to this chapter · the definition of who subsection (b) binds
- 10 U.S.C. chapter 47 · the Code in full · the enactment dates and revision notes quoted above
- Court of Appeals for the Armed Forces, Daily Journal digest, Confessions and Admissions · the four-element warning test, the official-capacity question, and the custody distinction quoted above
What this page did not open. The decisions themselves were not opened: Metz, Ramos and Flanner are quoted as the Court of Appeals for the Armed Forces summarises them in its own digest, not from the opinions, and no reporter citation is given here for that reason. The Military Rules of Evidence were not opened, so Mil. R. Evid. 301, 304 and 305 are not described. Miranda v. Arizona was not opened.
Checked on 19 September 2026, and checked for currency as well as for accuracy. Every statutory provision cited on this page was traced to the current United States Code: where a provision has not been amended since the 2023 edition, that edition’s text is the current text and its amendment record was read to confirm it; where a provision was amended by Pub. L. 118–159 (23 December 2024) or Pub. L. 119–60 (18 December 2025), the current text is quoted above and the amending Act is named beside it. The two Acts’ own texts were read to establish the complete list of provisions in this chapter that they changed. This was done through the Cornell mirror of the Code and through the Acts as published by the Government Publishing Office; the House preliminary Code could not be reached from here, so no third source confirms it. No independent expert review has taken place yet, and this page says so rather than implying one.