NATO SOFA Jurisdiction: Who Prosecutes a U.S. Service Member Overseas

When a U.S. service member is accused of an offense in a NATO host country, the first practical question is rarely about guilt. It is about which government gets to decide that question first: the U.S. military, applying the Uniform Code of Military Justice, or the host nation, applying its own criminal law. A barracks theft, a bar fight in town, a fatal traffic collision on the way to work, and an off-duty assault can each land in a different courtroom depending on a small set of facts that have nothing to do with how serious the conduct was. The rule that sorts them is found in one paragraph of one treaty, and the rule is frequently described backwards.

This guide lays out that rule the way the treaty actually states it and then turns it into something the treaty text does not provide: a decision tree that takes a single overseas offense and walks it to the government with the primary right to prosecute, followed by a set of worked examples. The treaty supplies the categories; it does not hand the reader an order of operations. That order of operations is the point of this discussion.

The agreement and its starting assumption

The instrument is the Agreement between the Parties to the North Atlantic Treaty regarding the Status of their Forces, signed in London on 19 June 1951 and commonly called the NATO Status of Forces Agreement, or SOFA. Its Article VII governs criminal jurisdiction over a visiting force. The agreement begins from a fact rather than a preference: when a U.S. member is in a NATO host country, both sovereigns frequently have a genuine claim. The United States can reach its own member anywhere because military jurisdiction follows status, a point developed in the separate discussion of how far a court-martial’s authority reaches. The host nation can reach conduct on its own soil because that is what territorial sovereignty means. Article VII exists to keep those two valid claims from colliding.

It does so in two layers. The first layer asks whether only one State’s law is even implicated. The second layer, which handles the great majority of real cases, asks who goes first when both States’ laws are implicated at once.

Layer one: exclusive jurisdiction

Before any contest over priority, Article VII paragraphs 1 and 2 ask a simpler question: is the alleged conduct a crime under only one of the two legal systems?

If an act is punishable under the sending State’s military law but not under the law of the host nation, the sending State, the United States, has exclusive jurisdiction. The classic examples are purely military offenses with no civilian equivalent, such as desertion, absence without leave, or disrespect toward a superior. The host nation’s courts have nothing to apply, so there is no contest.

The mirror image is also true. If an act is punishable under the host nation’s law but not under U.S. military law, the host nation has exclusive jurisdiction. In that situation there is no overlap for the treaty to allocate, because only one sovereign’s law reaches the conduct.

Exclusive jurisdiction is the clean case. It disposes of the offenses that live entirely inside one legal system. Everything else, the offense that violates both U.S. military law and host-nation law at the same time, falls into the second layer, which is where the treaty does its real work and where the citations are most often garbled.

Layer two: concurrent jurisdiction and the primary right

When the same conduct is a crime under both systems, Article VII paragraph 3 governs. The two sovereigns hold concurrent jurisdiction, and the treaty does not split the case down the middle. Instead it assigns a primary right to one State, meaning that State decides first whether to prosecute; the other State holds a secondary right that revives only if the first declines. The allocation runs as follows, and the exact mapping matters because it is the part that is so often stated in reverse.

Under paragraph 3(a), the sending State, the United States, has the primary right in two defined situations. The first, paragraph 3(a)(i), covers offenses solely against the property or security of the sending State, or solely against the person or property of another member of the U.S. force, its civilian component, or a dependent. In plainer terms, when the victim and the offender are both inside the U.S. military community, or the harm runs to U.S. government property or security, the United States goes first. The second, paragraph 3(a)(ii), covers offenses arising out of an act or omission done in the performance of official duty. When the member was carrying out assigned duties at the time, the United States goes first.

Under paragraph 3(b), the host nation, the receiving State, has the primary right over every other offense. This is the residual category, and it is large. It captures the off-duty offense committed against a host-nation citizen or against host-nation property: the off-base assault on a local, the drunk-driving collision involving a civilian, the theft from a host-nation shop. Because 3(b) is the catch-all, most ordinary street-level offenses against the local population fall to the host nation first.

The single most common error, and the one this rewrite exists to correct, is to swap these. Paragraph 3(a) is the sending State’s primary right; 3(a)(i) is the property/security and own-community branch; 3(a)(ii) is the official-duty branch; and 3(b) is the host nation’s residual primary right over all other offenses. These are three distinct categories, and no two of them carry the same label. Stating that the host nation goes first for official-duty acts, or that the United States goes first for an off-duty offense against a local, inverts the treaty.

The decision tree

The treaty lists the categories but does not order them for a reader holding a single set of facts. The following sequence does. Given one offense committed by a U.S. member in a NATO host country, run it from the top; the first branch that fits controls.

Is the conduct a crime under only one State’s law?

Punishable under U.S. military law but not host-nation law: the United States has exclusive jurisdiction. Stop.
Punishable under host-nation law but not U.S. military law: the host nation has exclusive jurisdiction. Stop.
Punishable under both: continue. The States have concurrent jurisdiction and the primary right must be allocated.

Did the offense arise out of an act or omission in the performance of official duty?

Yes: the United States has the primary right under paragraph 3(a)(ii). Stop.
No: continue.

Was the offense solely against U.S. property or security, or solely against the person or property of another member of the U.S. force, civilian component, or a dependent?

Yes: the United States has the primary right under paragraph 3(a)(i). Stop.
No: continue.

Any other offense.

The host nation has the primary right under paragraph 3(b).

Whoever holds the primary right may waive it. Under paragraph 3(c), the State with the primary right that decides not to prosecute notifies the other State as soon as practicable, and it must give sympathetic consideration to a request from the other State to waive in cases the requesting State considers particularly important. In practice, host nations frequently waive in favor of U.S. military prosecution when asked, but the treaty obliges only serious consideration, not agreement.

Two notes keep the tree honest. First, the official-duty branch and the own-community branch both belong to the sending State, so their order between steps two and three does not change the result; both lead to U.S. primacy. They are separated here only to mirror the treaty’s own 3(a)(i) and 3(a)(ii) structure and to make clear which branch a given fact pattern travels. Second, the tree allocates the primary right; it does not predict the final outcome, because waiver under paragraph 3(c) can move a case from one system to the other after the primary right is fixed.

Worked scenarios

The categories become concrete when run against facts. Each of the following takes one offense by a U.S. member in a NATO host country through the tree.

A member steals a laptop belonging to another U.S. service member from a shared barracks room on base. The conduct is a crime under both systems, so it is concurrent. It did not arise from official duty, so step two is no. The victim is another member of the U.S. force, so step three is yes. The United States holds the primary right under paragraph 3(a)(i). It is an own-community offense.

A member driving a military vehicle on an assigned convoy run causes a collision that injures a host-nation civilian. The conduct is a crime under both systems. It arose out of an act in the performance of official duty, so step two is yes. The United States holds the primary right under paragraph 3(a)(ii), the official-duty branch, even though the person harmed is a local civilian. Official duty, not the victim’s nationality, controls this one.

A member, off duty and out of uniform, assaults a host-nation citizen during an argument outside a bar in town. The conduct is a crime under both systems. It did not arise from official duty, so step two is no. It was not solely against U.S. property or the U.S. community, because the victim is a local civilian, so step three is no. The offense lands in step four, and the host nation holds the primary right under paragraph 3(b). This is the residual category doing its ordinary work, and it is precisely the fact pattern people most often get backwards.

A member commits an offense that exists only under U.S. military law, such as being absent without leave, with no counterpart in the host nation’s criminal code. The conduct never reaches the concurrent layer at all. Step one ends it: the United States has exclusive jurisdiction under paragraph 1, because only one State’s law is implicated.

A member, off duty, vandalizes property belonging to the U.S. government on a base. The conduct is a crime under both systems and did not arise from official duty, so step two is no. It is solely against the property or security of the sending State, so step three is yes. The United States holds the primary right under paragraph 3(a)(i).

A quick-reference allocation

The same logic, compressed for reference, sits in the table below.

Situation	Treaty provision	Who goes first
Crime under U.S. military law only	Art. VII para 1	United States, exclusive
Crime under host-nation law only	Art. VII para 2	Host nation, exclusive
Concurrent; against U.S. property/security or the U.S. community	Art. VII para 3(a)(i)	United States, primary right
Concurrent; arising from official duty	Art. VII para 3(a)(ii)	United States, primary right
Concurrent; all other offenses	Art. VII para 3(b)	Host nation, primary right
Primary-right holder declines	Art. VII para 3(c)	May waive; other State may then proceed

Frequently asked questions

If a U.S. service member commits a crime off base in a NATO country, who prosecutes?
For an offense that is a crime under both systems, did not arise from official duty, and was committed against a host-nation person or property, the host nation has the primary right under Article VII paragraph 3(b). That is the residual category, and most ordinary off-duty offenses against the local population fall into it. The host nation may waive in favor of U.S. prosecution, but it is not required to do so.

Does the United States automatically get to court-martial its own people overseas?
No. The United States can always reach its member through military status, but whether it goes first depends on the category of offense. The United States holds the primary right for official-duty conduct and for offenses against U.S. property, security, or the U.S. military community. For other offenses on host-nation soil, the host nation holds the primary right, subject to waiver.

What does “official duty” change?
If the offense arose out of an act or omission in the performance of official duty, the United States has the primary right under paragraph 3(a)(ii), regardless of whether the person harmed is a U.S. member or a local civilian. The official-duty branch is one of the two situations the treaty assigns to the sending State and is frequently the deciding factor in on-duty incidents.

Can a host nation give the case to the U.S. military?
Yes. Under paragraph 3(c), a State holding the primary right may decline to exercise it and must give sympathetic consideration to a waiver request from the other State in cases the requesting State considers particularly important. Host nations frequently waive in favor of U.S. military prosecution when asked, though the treaty obliges only serious consideration, not agreement.

Is this the same as the jurisdiction question for offenses inside the United States?
No. The SOFA framework allocates priority between two sovereigns over conduct on a host nation’s soil. Whether a court-martial can reach a member at all, regardless of country, is a separate matter of status and territorial reach treated in the dedicated discussions of personal jurisdiction and how far a court-martial’s authority extends.

Sources and Authorities

Agreement between the Parties to the North Atlantic Treaty regarding the Status of their Forces (NATO Status of Forces Agreement), London, 19 June 1951, Article VII, paragraphs 1, 2, 3(a)(i), 3(a)(ii), 3(b), and 3(c).
Uniform Code of Military Justice, Article 2 (persons subject to the code), 10 U.S.C. 802, and Article 5 (territorial applicability), 10 U.S.C. 805 (the basis for U.S. military reach over its members abroad; addressed in the dedicated territorial jurisdiction discussion).
U.S. Department of State materials on Status of Forces Agreements and the allocation of criminal jurisdiction.
Department of Defense and service implementing guidance on custody, waiver requests, and host-nation prosecutions under Article VII.

Disclaimer

This guide explains how the NATO Status of Forces Agreement allocates the primary right to prosecute and is provided for general information only. It is not legal advice and does not address the facts of any specific case. The allocation of jurisdiction in a real matter depends on the precise offense, the applicable agreement and any supplementary arrangements with the particular host nation, the official-duty determination, and decisions about waiver, all of which can vary by country and change over time. Anyone facing a military justice matter overseas should rely on the governing agreements and qualified counsel rather than on a general explanation.