Joining a foreign military can amount to desertion under Article 85 of the Uniform Code of Military Justice, but it is not automatic. Article 85 defines several distinct forms of desertion, and one of them specifically addresses enlistment or appointment in a foreign armed force. Whether a particular service member is guilty depends on which theory the government pursues and whether the facts satisfy that theory’s elements. This question turns on the precise language of the statute rather than on the general assumption that wearing another nation’s uniform is treason or desertion in itself.
The Forms of Desertion Under Article 85
Article 85 recognizes more than one way to commit desertion. The most familiar form is absence without authority from one’s unit, organization, or place of duty with the intent to remain away permanently. A second form is quitting one’s unit or place of duty with intent to avoid hazardous duty or to shirk important service. A third form, the one directly relevant here, addresses a service member who, without being regularly separated from one of the armed forces, enlists or accepts an appointment in the same or another armed force, or enters any foreign armed service except when authorized by the United States. Recognizing these separate theories is important, because joining a foreign military can be charged under more than one of them depending on the facts.
The Foreign Enlistment Theory
The clearest path to liability is the statutory clause that covers entering a foreign armed service. Under that theory, a service member who has not been regularly separated from the United States armed forces and who enters a foreign armed service without United States authorization commits desertion. The gravamen is that the member, while still legally obligated to the United States military, takes up service with another nation’s forces without permission. This theory does not require the government to prove a separate intent to remain permanently away in the way the basic absence theory does, because the conduct of entering the foreign service while still bound to the United States is itself the prohibited act. The critical questions are whether the member was still a member of the United States armed forces, whether the member actually entered a foreign armed service, and whether that entry was authorized by the United States.
The Authorization Exception
The statute carves out an exception for service entered into when authorized by the United States. Service members do sometimes serve with allied or partner forces through exchange programs, formal assignments, or other duly authorized arrangements. A member operating under such authorization has not committed desertion by serving alongside or within a foreign force, because the conduct falls squarely within the exception. The presence or absence of United States authorization is therefore a decisive fact, and it is something the defense will scrutinize closely whenever this theory is charged.
When the Absence Theory Applies Instead
If the foreign enlistment clause does not fit, the government may rely on the basic desertion theory of unauthorized absence with intent to remain away permanently. A service member who abandons a unit, goes to another country, and joins its armed forces may supply strong evidence of an intent never to return to the United States military. Under that theory, the prosecution must prove the unauthorized absence, that it was without authority, that the accused intended at some point to remain away permanently, and that the accused remained absent until the date alleged. Here the act of enlisting abroad functions as powerful circumstantial proof of the intent to remain permanently away, rather than as the offense itself.
Intent and the Difference From Mere Absence
The role of intent differs between the two theories. Under the foreign-service clause, the focus is on the unauthorized entry into another nation’s armed force while still obligated to the United States, so the case centers on the fact of entry and the absence of authorization. Under the permanent-absence clause, the focus is on the accused’s state of mind, and the government must establish the intent to stay away for good. Distinguishing these theories matters because a member might be absent without authority, which is a lesser offense, without having formed the intent that elevates the conduct to desertion. Joining a foreign force tends to bridge that gap by showing both a decisive break from United States service and, frequently, an intent not to return.
Time of War and Punishment
Article 85 also reflects the seriousness of desertion through its punishment scheme. If desertion or an attempt to desert is committed in time of war, the statute authorizes punishment up to death. At any other time, the punishment is whatever a court-martial may direct other than death. A service member who joins a foreign military during an armed conflict therefore faces the gravest exposure the article allows, which underscores why the foreign-enlistment scenario is treated so severely.
Conclusion
A service member who joins a foreign military can be guilty of desertion under Article 85, most directly under the clause that prohibits entering a foreign armed service without United States authorization while still a member of the United States armed forces. If that clause does not apply, the conduct may still constitute desertion under the permanent-absence theory, with the foreign enlistment serving as compelling evidence of intent to remain away. The decisive facts are whether the member remained obligated to the United States, whether the foreign service was authorized, and, where relevant, whether the member intended never to return. Guilt is therefore a function of the specific theory and its elements, not an automatic consequence of serving another nation.
Disclaimer
This article is provided strictly for general educational and informational purposes. It is intended to explain how the Uniform Code of Military Justice (UCMJ), the Rules for Courts-Martial, the Military Rules of Evidence, and related military administrative processes work as a matter of public legal education. It does not constitute legal advice, a legal opinion, or a recommendation about any particular case, and it is not a substitute for advice from a qualified military defense attorney who can evaluate the specific facts and command, service, and jurisdictional circumstances involved.
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