Territorial Jurisdiction: How Far a Court-Martial’s Authority Reaches

The Uniform Code of Military Justice answers the territorial question in five words. Article 5 is one sentence long, and it is the shortest article in the Code that does real work.

This page quotes it, explains why a statute that reaches everywhere still produces disputes about where an offense happened, and separates the geographic question from the two jurisdictional questions it is regularly mistaken for. The short answer is that Article 5 makes location alone insufficient to put a case outside the Code; the long answer, including the questions that location does still bear on, is what fills the rest of this page.

It does not tell you whether a particular offense can be tried, and it does not describe any foreign country’s law.

Article 5, in full

“This chapter applies in all places.”

Source: 10 U.S.C. 805 (Article 5).

That is the entire article. It was enacted on Aug. 10, 1956, ch. 1041, 70A Stat. 39, carrying forward the 1950 Act, and it has not needed the amendment chains that run down the side of most other articles.

Two consequences follow immediately. There is no list of places where the Code applies and no list of places where it does not, because the drafters wrote a rule instead of a map. And a defense that begins “this happened off base” or “this happened in another country” is not, on the text, a territorial defense at all.

Why a rule this broad still leaves questions open

A statute can apply in all places without reaching every person or every act in them. Article 5 settles one variable and leaves the others where they were.

The Code reaches persons, and who those persons are is fixed by Article 2’s list rather than by location. Article 5 tells you the Code travels; who is subject to the UCMJ tells you who it travels with.

Two entries in that list then bring geography back in, but as a condition on the person rather than as a limit on the Code. Article 2(a)(11) and (a)(12) both apply outside the United States and outside Puerto Rico, Guam and the Virgin Islands, and both open with the same qualifier:

“Subject to any treaty or agreement to which the United States is or may be a party or to any accepted rule of international law”

Source: 10 U.S.C. 802 (Article 2), subsections (a)(11) and (a)(12).

That qualifier is the real territorial limit in the Code, and it does not appear in Article 5. It is written into the categories of person, and it makes an international agreement part of the jurisdictional analysis for those categories.

What location does decide

Three things turn on where an offense occurred, and none of them is whether the Code applies.

Which other sovereign has an interest. An offense committed in a host nation may be an offense under that nation’s law as well. The Code does not resolve that competition; an agreement between the two governments does, which is the subject of NATO SOFA jurisdiction.

Whether a category in Article 2 attaches. For persons serving with or accompanying a force under (a)(10), the statute requires that the person be “in the field” during a declared war or contingency operation. For (a)(11) and (a)(12), the location is part of the definition.

Practical reach. Where witnesses are, where evidence is, and where a court can sit are questions of feasibility rather than authority, and the Code does not speak to them.

The distinction that does most of the work

Military jurisdiction has three parts, and they fail independently. A case can satisfy two and collapse on the third.

Personal jurisdiction asks whether this person is subject to the Code. It is answered by the list in Article 2.

Subject-matter jurisdiction asks whether this conduct is something a court-martial may try. Article 18 gives general courts-martial jurisdiction over “any offense made punishable by this chapter”, and which offenses a court-martial can try works through the forum-by-forum limits.

Territorial jurisdiction asks whether the place puts the case outside the Code. Under Article 5 the answer is no.

Because the third question is answered by a rule rather than a boundary, the pressure moves to the first two. A dispute that sounds geographic is, under Article 5, a dispute about status or about the offense.

What this page does not decide

Whether a foreign state will assert its own jurisdiction, or what its law provides. Article 5 governs the reach of a United States statute and nothing else.

Whether a particular international agreement applies. The qualifier in Article 2(a)(11) and (a)(12) makes that a live question for those categories, and answering it means reading the agreement.

Whether an offense committed in a particular place can be tried. That depends on the person, the offense and the forum, and each of those has its own article.

Where to go from here

For the statute as a whole and where Article 5 sits inside it, see the UCMJ as federal statute. For the sequence a case runs through once jurisdiction is established, see what happens before a court-martial.

Sources

• 10 U.S.C. 805 · Article 5, Territorial applicability of this chapter · the article in full, quoted above
• 10 U.S.C. 802 · Article 2, Persons subject to this chapter · the treaty qualifier in subsections (a)(11) and (a)(12)
• 10 U.S.C. chapter 47 · the Code in full · Article 5’s enactment note, and Article 18 on general court-martial jurisdiction

What this page did not open. No status of forces agreement was opened, and no foreign law. No court decision on the reach of Article 5 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.