How a Court-Martial Panel Is Chosen: Voir Dire and Member Selection
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A court-martial panel is not drawn from a jury pool. There is no venire, no summons to the general population, and no random draw. A convening authority selects members by name against a statutory standard, and the panel is then narrowed by challenge before a fixed number is impanelled.
This page follows that sequence in the statute: who is eligible, what standard governs selection, who is disqualified outright, what an enlisted accused may demand, and how many members the judge must impanel. The numbers at the end are exact, and they changed within the last decade.
It does not assess any selection decision, and it does not tell anyone how to approach a challenge.
Who is eligible to serve
Article 25 sets eligibility by status, in three tiers.
“(a) Any commissioned officer on active duty is eligible to serve on all courts-martial for the trial of any person who may lawfully be brought before such courts for trial. (b) Any warrant officer on active duty is eligible to serve on general and special courts-martial for the trial of any person, other than a commissioned officer, who may lawfully be brought before such courts for trial. (c)(1) Any enlisted member on active duty is eligible to serve on a general or special court-martial for the trial of any other enlisted member.”
Source: 10 U.S.C. 825 (Article 25), subsections (a), (b) and (c)(1).
The tiers are not symmetrical. A commissioned officer may sit on any case. A warrant officer may sit on any case except one trying a commissioned officer. An enlisted member may sit only on the trial of another enlisted member.
The selection standard, and what it is not
The convening authority does not pick at random, and the statute states the criteria:
“(2) When convening a court-martial, the convening authority shall detail as members thereof such members of the armed forces as, in the opinion of the convening authority, are best qualified for the duty by reason of age, education, training, experience, length of service, and judicial temperament.”
Source: 10 U.S.C. 825 (Article 25), subsection (e)(2).
Six criteria, applied “in the opinion of the convening authority”. This is the structural difference from a civilian jury that matters most: the selecting official is the same official who convened the court, and the standard is qualification rather than representativeness.
The same paragraph then disqualifies four roles absolutely:
“No member of an armed force is eligible to serve as a member of a general or special court-martial when the member is the accuser or a witness for the prosecution or has acted as preliminary hearing officer or as counsel in the same case.”
Source: 10 U.S.C. 825 (Article 25), subsection (e)(2).
Article 25(e)(1) adds a rank preference rather than a rule: “When it can be avoided, no member of an armed force may be tried by a court-martial any member of which is junior to the member being tried in rank or grade.” The qualifier “when it can be avoided” is doing the work.
What an enlisted accused may demand
Article 25(c)(2) gives an enlisted accused a choice that must be made before assembly, and states it as a personal request:
“(2) Before a court-martial with a military judge and members is assembled for trial, an enlisted member who is an accused may personally request, orally on the record or in writing, that— (A) the membership of the court-martial be comprised entirely of officers; or (B) enlisted members comprise at least one-third of the membership of the court-martial, regardless of whether enlisted members have been detailed to the court-martial.”
Source: 10 U.S.C. 825 (Article 25), subsection (c)(2).
Two details decide how this works. The request must be personal and on the record or in writing, and it must come before the court is assembled. Once made, paragraph (3) provides that the accused may not be tried by a panel inconsistent with the request, subject to one exception: if physical conditions or military exigencies leave too few eligible officers or enlisted members available, the trial may proceed, and the convening authority “shall make a detailed written statement of the reasons for nonavailability”, which is appended to the record.
Challenges
Article 41 provides for challenge of both the judge and the members.
“(a)(1) The military judge and members of a general or special court-martial may be challenged by the accused or the trial counsel for cause stated to the court.”
Source: 10 U.S.C. 841 (Article 41), subsection (a)(1).
Challenges for cause are unlimited in principle because each must be stated and ruled on. The article also provides for peremptory challenge, which requires no cause and is numerically limited.
Voir dire is the questioning that precedes both. The Code does not describe how it is conducted; that procedure lives in the Manual for Courts-Martial, which this page did not open.
What the convening authority actually hands over
The Code says the convening authority details members. It does not say how many, and since 23 December 2024 the answer is a rule rather than a practice.
“(1) In general. The convening authority shall— (A) detail qualified persons as members for courts-martial in accordance with the criteria described in Article 25; (B) provide to the military judge— (i) in a capital general court-martial, at least 24 detailed members for randomization; (ii) in a non-capital general court-martial, at least 16 detailed members for randomization; (iii) in a special court-martial, at least 8 detailed members for randomization; or (iv) where a convening authority determines it to be impracticable to meet the requirements of R.C.M. 503(a)(1)(B)(i)–(iii) due to exceptional circumstances, a sufficient number of detailed members to allow for the randomization process in R.C.M. 911.”
Source: Executive Order 14130, 20 December 2024, Annex, amending the Manual for Courts-Martial.
This changes the shape of the answer to the title’s question. A convening authority does not hand the court a panel; it hands the military judge a pool, and the pool is larger than the panel that will sit. The Article 25 criteria govern who goes into the pool. What comes out of it is decided by randomization under R.C.M. 911 and then by challenges.
The rule also constrains the escape hatch. Where the minimum cannot be met, the convening authority must consult the servicing staff judge advocate before determining that exceptional circumstances exist, and must document that determination in writing under procedures the Secretary concerned prescribes. The rule defines the category rather than leaving it open: exceptional circumstances “include circumstances in which the minimum required numbers of detailed members are not available due to a military necessity or exigency”.
And a separate choice is recorded at the same moment. The convening authority states whether the judge is authorised to impanel a specified number of alternate members, or authorised to impanel alternates only if excess members remain after all challenges.
So the sequence is four steps, not one: Article 25 detailing → R.C.M. 503(a)(1) minimum pool → R.C.M. 911 randomization → R.C.M. 912 challenges. A description that says the convening authority selects the panel collapses all four.
How many members are impanelled
This is where recent law changed the shape of a panel, and the numbers are in Article 29 rather than Article 25.
“(2) In a general court-martial, the military judge shall impanel— (A) 12 members in a capital case; and (B) eight members in a noncapital case. (3) In a special court-martial, the military judge shall impanel four members.”
Source: 10 U.S.C. 829 (Article 29), subsection (b)(2) and (b)(3).
The sequence in Article 29(b)(1) is fixed: the judge impanels “after determination of challenges”, and then excuses the members who were assembled but not impanelled. So more members are detailed and assembled than will sit, and the excess is released once challenges are resolved. Article 25(e)(3) requires the convening authority to detail “not less than the number of members necessary to impanel the court-martial under section 829”.
Alternate members may be impanelled in addition, if the convening authority authorises them. Article 29(d) then governs what happens if the panel drops below the required size after impanelling.
Article 29(a) fixes the moment of assembly and its effect: the judge announces assembly, and after that “no member may be absent” unless excused by challenge, under the impanelling provision, or by order of the judge or convening authority for disability or other good cause.
What this page does not decide
Whether a particular panel was properly selected. That is litigated, on a record, under standards this page has not opened.
How voir dire is conducted, or how many peremptory challenges are allowed in a given forum. Those details are in rules prescribed by the President.
Whether an enlisted accused should make a request under Article 25(c)(2). The statute creates the option; the choice belongs to the accused with counsel.
Where to go from here
The officials who select and detail members are covered in convening authority, and what the panel does once seated is in inside a court-martial trial. For who else is in the room, see who is who in a court-martial.
Sources
- 10 U.S.C. 825 · Article 25, Who may serve on courts-martial · eligibility tiers, the six selection criteria, the disqualifications, and the enlisted-membership request
- 10 U.S.C. 829 · Article 29, Assembly and impaneling of members · the impanelling numbers and the sequence after challenges
- 10 U.S.C. 841 · Article 41, Challenges · challenge for cause and peremptory challenge
- 10 U.S.C. chapter 47 · the Code in full · the amendment chains for Articles 25 and 29
What this page did not open. The Manual for Courts-Martial was not opened, and the conduct of voir dire, the number of peremptory challenges and the procedure for ruling on causal challenges are prescribed there. No court decision was 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.