Court-Martial Jurisdiction: Who and What the Military Can Prosecute

What jurisdiction means — and the three prerequisites

Jurisdiction is the power of a court to hear a case and render a valid judgment. Ex parte McCardle, 74 U.S. (7 Wall.) 506 (1868). A court-martial that lacks it cannot decide anything — not guilt, not sentence, not even the smaller issues in the case. Courts-martial reach worldwide, but only over a defined class of people: members of the armed forces. Solorio v. United States, 483 U.S. 435 (1987).

Three prerequisites must all be satisfied before a court-martial can try anyone. United States v. Ali, 71 M.J. 256 (C.A.A.F. 2012); United States v. Harmon, 63 M.J. 98 (C.A.A.F. 2006):

• Jurisdiction over the offense (subject-matter jurisdiction) — the offense is chargeable under the UCMJ and the accused was a service member when it was committed;
• Jurisdiction over the person — the accused holds military status at the time of trial; and
• A properly convened and composed court — the right official convened it, and it was assembled according to the rules.

The two status questions are easy to conflate and critical to separate. Subject-matter jurisdiction looks backward to the day of the offense; personal jurisdiction looks at the day the government hauls you into court. A person can satisfy one and not the other — which is exactly where jurisdiction motions live.

Where the power comes from: the constitutional basis

Court-martial jurisdiction flows from Article I, section 8, clause 14 of the Constitution — Congress’s power to make rules for the government and regulation of the land and naval forces. Congress exercised that power in the UCMJ, principally Articles 2, 3, and 36, and the President implemented it in R.C.M. 201–204 of the Manual for Courts-Martial. Customary international law and treaties supply additional sources of authority for the military justice system abroad.

Because the power rests on Congress’s authority over the armed forces — not on geography — the Supreme Court has framed the jurisdictional question as one of membership:

“The test for jurisdiction . . . is one of status, namely, whether the accused in the court-martial proceeding is a person who can be regarded as falling within the term ‘land and naval Forces.’”Kinsella v. United States ex rel. Singleton, 361 U.S. 234 (1960)

That single sentence explains most of modern jurisdiction law: the fights are almost always about whether a particular person, on a particular day, counted as part of the armed forces.

The five elements of R.C.M. 201(b)

R.C.M. 201(b) breaks jurisdiction into five working elements. Each is a potential defect — and a potential motion:

Two points from the case law are worth pinning down. A properly constituted court-martial may try any person subject to the UCMJ — even one not under the convening authority’s command, and even one who changed services between offense and trial: an accused who offended in the Army was properly tried while later enlisted in the Air Force. United States v. Cantrell, 44 M.J. 711 (A.F. Ct. Crim. App. 1996). And when an active-duty member offends on an installation where the United States holds only “proprietary” jurisdiction, the court-martial still has subject-matter jurisdiction — which sovereign prosecutes in concurrent-jurisdiction cases is policy, not power. United States v. Kerns, 75 M.J. 783 (A.F. Ct. Crim. App. 2016). The roles of the officials involved are covered in who’s who in a court-martial.

Jurisdiction over the offense: Solorio and the status test

For eighteen years, the rule was different. O’Callahan v. Parker, 395 U.S. 258 (1969) required the government to show the offense was “service-connected” before a court-martial could try it, and Relford v. Commandant, 401 U.S. 355 (1971) supplied a list of factors for making that call. Off-post crimes against civilians frequently fell outside military reach.

Solorio v. United States overruled O’Callahan in 1987 and abandoned the service-connection test entirely: court-martial jurisdiction over an offense depends solely on the accused’s status as a member of the armed forces. United States v. Hennis, 79 M.J. 370 (C.A.A.F. 2020). The bottom line is short: subject-matter jurisdiction is established by showing military status at the time of the offense. Under Article 18, general courts-martial may try persons subject to the UCMJ for any offense the code makes punishable — and under Article 5, the code “applies in all places,” so where the accused was standing is irrelevant.

Three refinements:

• Capital cases too. A concurrence in Loving v. United States, 517 U.S. 748 (1996) floated the idea that capital cases might still require service connection. CAAF rejected it: “[w]e hold that Solorio applies to capital cases.” Hennis, 79 M.J. at 379.
• Timing of the offense matters — precisely. An accused who posted child pornography online before enlisting, but kept control of the account and left the image accessible while on active duty, committed a distribution offense on active duty. United States v. Kuemmerle, 67 M.J. 141 (C.A.A.F. 2009). Conversely, where the government could not show the accused held qualifying status when the offense occurred, jurisdiction failed. United States v. Morita, 74 M.J. 116 (C.A.A.F. 2015).
• Double punishment is policy, not power. As a matter of comity, a member generally will not be court-martialed or given Article 15 punishment for the same act a civilian court already tried — in the Army, that policy lives in AR 27-10, and it is a policy, not a jurisdictional bar.

Jurisdiction over the person: when status begins and ends

Personal jurisdiction generally begins upon enlistment, induction, acceptance of a commission, or entry onto active duty under orders. Article 2(b) makes a voluntary enlistment by a person with capacity to understand it effective — the change of status from civilian to soldier occurs upon taking the oath. And Article 2(c) codifies constructive enlistment: a person serving with an armed force who voluntarily submitted to military authority, met minimum competence and age qualifications, received military pay or allowances, and performed military duties is subject to the UCMJ even if the enlistment paperwork was defective.

On the back end, discharge is the master switch. In personam jurisdiction over a military person is lost upon discharge, absent some saving circumstance or statutory authorization. United States v. Christensen, 78 M.J. 1 (C.A.A.F. 2018). A discharged civilian generally cannot be court-martialed at all — even for offenses committed while in uniform. United States ex rel. Toth v. Quarles, 350 U.S. 11 (1955). The rule can operate mid-case: when the Army administratively discharged an accused after his special court-martial was convened and he was arraigned, the discharge divested the court of jurisdiction to try him. Smith v. Vanderbush, 47 M.J. 56 (C.A.A.F. 1997).

But the exceptions have teeth. A valid discharge generally requires delivery of the discharge certificate, a final accounting of pay, and completion of the clearing process — and reaching your ETS date does not by itself end jurisdiction; it continues until a discharge is actually delivered or the government fails to act within a reasonable time after the member objects to retention. United States v. Poole, 30 M.J. 149 (C.M.A. 1990). Jurisdiction that has attached before discharge — through apprehension, restraint, preferral of charges, or a valid legal hold placed with a view to trial — continues through trial. R.C.M. 202(c). And a discharge will not defeat a retrial ordered on appeal, while a prisoner with military confinement left to serve remains under continuing jurisdiction even after a punitive discharge is executed. The full map of inception, termination, and the defects in between is in challenging jurisdiction: enlistment defects, discharge, and personal jurisdiction motions.

Reservists, retirees, and civilians

The hard status questions cluster around three groups, and each has its own page:

• Reservists and National Guard members are subject to the UCMJ while in federal Title 10 status — active duty, annual training, inactive-duty training, and (since 2019) travel to and between IDT periods — but generally not while off orders or in state status. See can reservists, Guard members, and retirees be court-martialed?
• Retirees of a regular component who are entitled to pay remain subject to the UCMJ, and CAAF has upheld both the constitutionality of that jurisdiction and the power to sentence a retiree to a punitive discharge. United States v. Begani, 81 M.J. 273 (C.A.A.F. 2021); United States v. Dinger, 77 M.J. 447 (C.A.A.F. 2018).
• Civilians are outside court-martial reach except in narrow circumstances — chiefly persons serving with or accompanying the force in the field during declared war or a contingency operation — while the Military Extraterritorial Jurisdiction Act routes most overseas civilian misconduct to federal district court. See UCMJ jurisdiction over civilians and contractors.

Article 2 also covers several categories that surprise people: cadets and midshipmen at the service academies (though ROTC cadets are generally not subject to the UCMJ absent special facts tying them to Title 10 status), prisoners of war, and persons in military custody serving a court-martial sentence — who remain military prisoners under “continuing jurisdiction” even after a punitive discharge is executed, and even while housed in a civilian prison. Fisher v. Commander, Army Regional Confinement Facility, 56 M.J. 691 (N-M. Ct. Crim. App. 2001). In every non-active-duty category, the government’s charging paperwork should spell out the jurisdictional basis — and its failure to do so is an early signal the theory may not survive scrutiny.

Challenging jurisdiction: posture, burdens, and timing

Jurisdiction is litigated differently from almost everything else in a court-martial:

• It can be raised at any time. Lack of jurisdiction is raised by motion to dismiss under R.C.M. 907 and may be made at any stage of the proceeding — it is never waived by silence, a guilty plea, or the passage of time.
• It is an interlocutory question for the judge. Jurisdiction is decided by the military judge, with the burden on the government to prove it by a preponderance of the evidence. United States v. Oliver, 57 M.J. 170 (C.A.A.F. 2002).
• The burden rises at trial. If the question is contested before the fact finder at trial, the government must prove jurisdiction beyond a reasonable doubt — and for “peculiarly military” offenses such as AWOL, the accused’s military status is an element of the offense itself. United States v. Marsh, 15 M.J. 252 (C.M.A. 1983); United States v. Bailey, 6 M.J. 965 (N.M.C.M.R. 1979).
• Pleading matters. A specification generally need not recite the basis for personal jurisdiction over an active-duty accused, but in every other circumstance — reservist, retiree, civilian — specifying the jurisdictional basis is important. United States v. Miller, 78 M.J. 835 (Army Ct. Crim. App. 2019).

Because the question is jurisdictional, the record stays open in an unusual way: in Oliver itself, medical records submitted on appeal established that the accused had been retained on active duty beyond the expiration of his orders, supplying the jurisdiction the trial record left in doubt. That cuts both ways — the government can shore up a shaky record late, but the defense can also press the issue long after findings, because a judgment without jurisdiction is invalid no matter when the defect surfaces. The procedural framework for these motions — and the motions practice around them — is developed in the jurisdiction defects and motions deep dive.

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.