Court-Martial Panel Selection: How Voir Dire and Challenges Work

A panel, not a jury

The Sixth Amendment right to a jury drawn from the community does not apply at a court-martial, because members are selected from the armed forces rather than the “state.” Whelchel v. McDonald, 340 U.S. 122 (1950). What a military accused has instead is a right Congress created: trial before court members chosen under Article 25, UCMJ, protected by Fifth Amendment due process. United States v. Witham, 47 M.J. 297 (C.A.A.F. 1997).

Due process still demands impartial members — and the machinery for getting them is the subject of this guide. As CAAF put it in United States v. Jefferson, 44 M.J. 322 (C.A.A.F. 1996), the reliability of a verdict depends on the impartiality of the members, and voir dire is fundamental to a fair trial. Part of the process due is precisely the right to challenge members for cause and peremptorily. Witham, 47 M.J. at 301.

The difference from civilian practice cuts both ways. There is no venire drawn at random from the community, no jury commissioner, and no cross-section requirement — but there is also a screened pool of members a commander considered qualified, mandatory pretrial questionnaires, and unlimited challenges for cause. Panel selection is the opening move of the trial stage of a court-martial, and decisions made here — forum, composition, challenges — frame everything that follows, from instructions to sentencing.

How the convening authority picks members

Unlike a civilian jury pool, a court-martial panel is hand-selected. The convening authority personally details the members, choosing those who are, in the commander’s opinion, best qualified by reason of age, education, training, experience, length of service, and judicial temperament — the Article 25(d)(2) criteria. Nominations typically flow up from subordinate commands, filtered through the staff judge advocate’s advice.

That power has two hard limits:

• No systematic exclusion. The convening authority cannot screen out otherwise qualified candidates by rank, race, religion, or gender. United States v. Dowty, 60 M.J. 163 (C.A.A.F. 2004). Even paperwork can cross the line: in United States v. Kirkland, 53 M.J. 22 (C.A.A.F. 2000), a nomination form with columns only for E-7 and above created an “unresolved appearance” of rank exclusion that required reversal of the sentence. (Members in the grades of E-1 and E-2, however, are presumptively unqualified under Article 25 and may be excluded. United States v. Yager, 7 M.J. 171 (C.M.A. 1979).)
• No stacking. The convening authority cannot pick members to obtain a particular result — a panel chosen to punish harshly is unlawful. United States v. Riesbeck, 77 M.J. 154 (C.A.A.F. 2018). Stacking claims overlap with unlawful command influence, and improper motive is the key element; a benign reason for including or excluding a group is generally not error. United States v. White, 48 M.J. 251 (C.A.A.F. 1998).

The defense can see how the sausage was made: on request, the government must hand over the written materials the convening authority considered in selecting the members, including the SJA’s panel-selection advice and the subordinate commanders’ nominations. R.C.M. 912(a)(2). If those materials show improper selection, the remedy starts with a motion — covered below.

Panel size and forum choices after the MJA

The Military Justice Act of 2016 replaced the old floating “quorum” floors with fixed panel sizes for cases referred on or after 1 January 2019:

A panel that small would be unconstitutional in civilian court, but military courts have upheld it because the Sixth Amendment jury right does not reach courts-martial. The type of court-martial also sets the punishment ceiling — the differences are mapped in Summary, Special, and General Courts-Martial Compared.

Within that structure, the accused holds real choices. An enlisted accused may elect a panel with at least one-third enlisted members — the mechanics and strategy are covered in Requesting Enlisted Members on Your Panel. Any accused may instead elect trial by military judge alone. And because more members are questioned than will sit, the modern process ends with impanelment: after challenges, remaining members are assigned random numbers under R.C.M. 912A, the required number (plus any convening-authority-authorized alternates) is seated, and the excess members are excused. An alternate sits through trial but deliberates only if a sitting member is excused.

Questionnaires and the duty to disclose

Counsel do not meet the members cold. Under R.C.M. 912(a)(1), trial counsel may — and on defense request must — send the members written questionnaires before trial covering date of birth, education, unit, past duty assignments, decorations, date of rank, and whether the member played any prior role in the case (accuser, counsel, investigating officer, or forwarding commander). Additional questions may be added with the military judge’s approval, and each member must sign written answers.

At trial, members answer under oath and carry a continuing duty of candor. The stakes of that duty are real: in United States v. Albaaj, 65 M.J. 167 (C.A.A.F. 2007), a member failed to disclose an antagonistic working relationship with the accused’s brother — a defense witness — and CAAF reversed, because an honest answer would have supplied a valid challenge. Dishonest or incomplete answers about involvement in a sexual assault review board produced the same result in United States v. Commisso, 76 M.J. 315 (C.A.A.F. 2017).

Disclosure duties run in every direction. The SJA and trial counsel have an affirmative duty to disclose known grounds for challenge — a case was reversed where a deputy SJA sat silent while his sister-in-law served as a member. United States v. Glenn, 25 M.J. 278 (C.M.A. 1987). But the defense must do its own homework: when a questionnaire flags possible disqualification, counsel must reasonably inquire before trial or during voir dire, or the issue is waived. United States v. Dunbar, 48 M.J. 288 (C.A.A.F. 1998).

Voir dire: purpose and mechanics

Voir dire — the questioning of panel members — has one officially sanctioned purpose: gathering the information needed to use challenges intelligently. R.C.M. 912(d) discussion. CAAF has described the function this way:

“The purpose of voir dire and challenges is, in part, to ferret out facts, to make conclusions about the members’ sincerity, and to adjudicate the members’ ability to sit as part of a fair and impartial panel.”United States v. Bragg, 66 M.J. 325, 327 (C.A.A.F. 2008)

Skilled counsel also use voir dire to educate the panel, establish a theme, and build rapport — legitimate only as byproducts of proper questioning, never as its purpose. Counsel may not preview inadmissible facts, argue the case, ask members to commit to findings on hypothetical facts (United States v. Nieto, 66 M.J. 146 (C.A.A.F. 2008)), or fish for jury nullification.

The military judge runs the process and has broad discretion. The judge may question the members personally or let counsel do it (the rules prefer the latter), may require questions in writing days in advance, and may limit or deny individual questioning — there is no right to individually voir dire members. United States v. Dewrell, 55 M.J. 131 (C.A.A.F. 2001). In the Army, the sequence generally runs:

Group questioning comes first — the judge asks a standard battery (in the Army, 28 Benchbook questions, including whether any member feels unable to give the accused a fair trial), then each side questions the group, and individual follow-up happens only with the judge’s permission. The discretion has limits: refusing to allow any inquiry into a valid area of potential bias is an abuse. The judge abused his discretion by refusing to reopen voir dire about members’ relationships with the trial counsel in United States v. Richardson, 61 M.J. 113 (C.A.A.F. 2005), and about members whose friends or relatives were crime victims in Jefferson. Defense counsel protect the record by asking their questions in group voir dire, requesting reopening on the record, and stating the legal basis — a bare request with no basis is likely waiver. United States v. Belflower, 50 M.J. 306 (C.A.A.F. 1999).

Challenges: unlimited for cause, one peremptory

Challenges are the payoff of everything above. Both sides have an unlimited number of challenges for cause under Article 41(a)(1), UCMJ, on the grounds listed in R.C.M. 912(f)(1) — ranging from mechanical disqualifications (the member is an accuser, a witness, or junior in rank to the accused) to the broad catch-all for any member whose service would leave substantial doubt about the court-martial’s legality, fairness, and impartiality. That catch-all is where actual and implied bias live, and military judges are instructed to liberally grant defense challenges for cause. United States v. James, 61 M.J. 132 (C.A.A.F. 2005).

Each side then has exactly one peremptory challenge — no reason required, subject to the constitutional prohibition on race- and gender-based strikes. Article 41(b)(1), UCMJ. If causal challenges drop the panel below the Article 16 minimum (8 for a GCM, 4 for a SPCM), remaining causal challenges are exercised or waived, new members are detailed, and peremptories wait; when new members join, each side gets causal challenges plus a fresh peremptory against members not previously subject to one. Article 41(a)(2), (c). The full battleground — the R.C.M. 912(f) grounds, the actual and implied bias tests, the liberal-grant mandate, preservation rules, and Batson — is dissected in Challenges for Cause, Implied Bias, and the Peremptory Challenge.

Challenging the entire panel

When the defect is in the selection itself — not any single member — R.C.M. 912(b) lets a party move to stay the proceedings before voir dire begins on the ground that the members were improperly selected. The motion must include an offer of proof that, if true, would establish improper selection; if the judge finds the convening authority selected members improperly, the proceedings are stayed until a proper panel exists.

Timing matters: failure to make the motion timely forfeits the issue, except where the panel falls below the minimum required number, a member lacks basic qualifications, or requested enlisted members are missing without adequate explanation. On the merits, the defense bears the initial burden of showing improper exclusion of qualified personnel; the burden then shifts to the government to prove the process was clean. United States v. Bartee, 76 M.J. 141 (C.A.A.F. 2017). These challenges are hard — good-faith administrative errors and unexplained paperwork rarely carry the day without evidence of improper motive — but the discovery they generate about how the panel was built is valuable in itself.

One structural point the defense should know going in: court-martial verdicts need not be unanimous. The service courts have held that Ramos v. Louisiana does not apply to the military, so a panel convicts on a three-fourths vote. United States v. Pritchard, 82 M.J. 686 (A. Ct. Crim. App. 2022). That arithmetic makes every single seat — and every challenge — count.

The judge-alone alternative

The accused can decline a panel altogether and elect trial by military judge alone, orally on the record or in a signed writing. R.C.M. 903(b). The election must be knowing and voluntary — a waiver built on misadvice about the forum options does not comply with Article 16 — and it can be withdrawn as of right before approval, or after approval if the military judge changes. Under the current Article 25, there is no longer a default to an all-officer panel for an enlisted accused who makes no election: the court is composed of whatever members the convening authority detailed unless the accused elects otherwise.

Whether to go judge-alone is one of the most consequential decisions in the case: it trades the three-fourths-vote dynamics and unpredictability of a member panel for a single professional fact-finder. The right answer depends on the charges, the evidence, the judge, and the panel the convening authority actually detailed — which is why the decision usually waits until the defense has seen the questionnaires. Your defense counsel should walk through all three forum options before arraignment, and the broader protections in play are catalogued in Rights of the Accused in a Court-Martial.

Frequently asked questions

Sources for this guide include the Uniform Code of Military Justice, the Manual for Courts-Martial (2024 ed.), the Rules for Courts-Martial, the TJAGLCS Criminal Law Deskbook, and the cited decisions of the Court of Appeals for the Armed Forces and the service Courts of Criminal Appeals. It is attorney advertising and general legal information — not legal advice, and reading it does not create an attorney–client relationship. Every case turns on its own facts. Service procedures vary; Army references (AR 27-10) are noted where used.