The difference between AWOL and desertion comes down to a single element: intent. Both involve a service member being where they are not supposed to be. But absence without leave under Article 86 of the Uniform Code of Military Justice is the unauthorized absence itself, while desertion under Article 85 is an unauthorized absence joined to a particular state of mind. That added mental element is what separates a relatively contained offense from one of the gravest charges in the military code, and it is almost always the issue a desertion case turns on.
AWOL under Article 86 #
Article 86 addresses absence without leave. In plain terms, it covers leaving or staying away from the place of duty without authorization. The government must prove the absence was unauthorized and establish its dates, but it does not have to prove that the service member meant to leave for good. AWOL is treated as a general-intent offense: being absent without permission is enough.
This is the more common of the two charges. It captures everything from oversleeping past a report time to leaving for a stretch of days or weeks without going through proper channels. The exposure rises with the length and circumstances of the absence, but on its own AWOL does not carry the weight of desertion.
Desertion under Article 85 #
Article 85 requires more. Beyond the unauthorized absence, the government must prove a specific intent, namely one of the following:
- An intent to remain away from the unit, organization, or place of duty permanently; or
- An intent to avoid hazardous duty; or
- An intent to shirk important service.
Because desertion is a specific-intent crime, the prosecution has to prove that mental state, not merely the fact of being gone. That is a heavier burden than AWOL imposes, and it is the reason desertion carries far greater punishment.
Length of absence is not the dividing line #
A common misunderstanding is that a long enough absence automatically becomes desertion. It does not. Duration can be circumstantial evidence of intent, but it does not convert one offense into the other by itself.
A few points make this concrete:
- A service member can be absent for months and still lack the intent to remain away permanently, in which case the conduct is AWOL, not desertion.
- A short absence can support a desertion charge if it is accompanied by clear evidence of intent, such as an explicit statement of leaving for good.
- To prove intent, the government typically relies on circumstantial evidence: the length of the absence, disposal of military gear, taking on a new identity, or statements made to others.
Because intent is inferred from circumstances rather than observed directly, it is the most contested issue in a desertion case. The same set of facts can read very differently depending on what the surrounding evidence suggests about the service member’s state of mind.
A side-by-side comparison:
| AWOL (Article 86) | Desertion (Article 85) | |
|---|---|---|
| Core act | Unauthorized absence | Unauthorized absence |
| Required intent | None beyond the absence | Intent to remain away permanently, avoid hazardous duty, or shirk important service |
| Type of offense | General intent | Specific intent |
| Relative exposure | Lower | Substantially higher |
Why the distinction matters in practice #
The two articles describe overlapping conduct but very different crimes. Which one is charged determines what the government must prove and how serious the exposure is. When desertion is alleged, the central question is rarely whether the person was absent; it is whether the evidence proves the specific intent the statute requires. When that intent cannot be shown, the conduct may still be AWOL.
This page explains how the two offenses differ; it does not advise on any particular case. Because the line between them is an intent question decided on the facts, anyone facing a court-martial should consult a qualified military defense attorney about their situation.
In short, AWOL is unauthorized absence, and desertion is unauthorized absence plus a proven intent to stay away permanently or to avoid duty. The intent element is the dividing line, it drives the far greater punishment for desertion, and it is the issue these cases are fought over.