Service members increasingly conduct official communication through personal phones, personal email accounts, and messaging apps. When an investigation begins, the impulse to clean up a device can be powerful and dangerous. Deleting command emails or related messages from a personal device can, under the right circumstances, support a charge of obstructing justice. The key is not where the data lived but what the member knew and intended when the data disappeared.
The governing offense: Article 131b, UCMJ
Obstructing justice is charged under Article 131b of the Uniform Code of Military Justice, codified at 10 U.S.C. 931b. This article took effect on January 1, 2019, as part of the reforms implemented under the Military Justice Act of 2016. It replaced the former practice of charging obstruction as a clause-3 offense under the general article, giving obstruction its own enumerated provision.
The statute reaches any person subject to the UCMJ who, in the case of a certain person against whom the accused believed there were or would be criminal or disciplinary proceedings pending, acts with the intent to influence, impede, or otherwise obstruct the due administration of justice.
The elements the government must prove
To convict, the prosecution must establish, beyond a reasonable doubt, that the accused engaged in certain conduct in the case of a person against whom the accused had reason to believe there were or would be criminal or disciplinary proceedings pending; that the act was done with the intent to influence, impede, or otherwise obstruct the due administration of justice; and that, under the circumstances, the conduct was prejudicial to good order and discipline or service discrediting.
Destruction or concealment of evidence is a classic form of the prohibited conduct. Deleting digital messages, records, or media after learning of an allegation or an impending interview fits squarely within the kind of act Article 131b targets.
Why the device being personal does not save the member
The statute focuses on the act and the intent, not on the ownership of the hardware. The relevant evidence is the content of the communications. Command emails and related messages are official records or potential evidence regardless of whether they reside on a government laptop or a personal phone. Deleting them to keep them out of an investigation is the obstructive act the article forbids.
In fact, the personal nature of the device often cuts against the member. Members frequently delete data from personal phones precisely because they believe those devices are private and beyond reach. That belief is mistaken. The forensic recovery of deleted material, message metadata, and backup copies can both reveal the deletion and demonstrate the timing that exposes intent. The personal device does not create a safe harbor; it creates a record of the attempt to hide.
Knowledge and intent are the real battleground
The decisive elements are knowledge and intent. The government must show that the member had reason to believe proceedings were pending or imminent and that the deletion was done to influence or impede those proceedings. Routine, habitual housekeeping carried out before any awareness of an investigation looks very different from a targeted purge that occurs hours after the member learns of a complaint.
Timing therefore carries enormous evidentiary weight. Deletion that coincides with a notice of investigation, a preservation request, a law enforcement contact, or the issuance of a litigation hold strongly suggests obstructive intent. The further the deletion sits from any such trigger, and the more it conforms to an established pattern of clearing old data, the weaker the inference of intent becomes.
Defenses that genuinely apply
A member accused of obstruction for deleting command emails has several legitimate defenses, each tied to an element the government must prove.
No knowledge of pending or anticipated proceedings. If the member deleted the messages before having any reason to believe an investigation or disciplinary action was coming, the knowledge element fails. Obstruction requires an existing or reasonably anticipated proceeding.
No obstructive intent. Deletion that reflects ordinary device management, storage limits, automatic sync settings, or a routine practice of clearing old correspondence is not done to impede justice. The defense can show the conduct was innocent and habitual rather than targeted.
No actual obstruction of relevant evidence. If the deleted material was duplicative and remained fully available on official servers, in recipients’ inboxes, or in backups, the defense can argue the conduct did not impede the administration of justice in any meaningful way, undercutting both the intent inference and the prejudice element.
Failure to prove the prejudice or discredit element. Even where conduct occurred, the government must connect it to prejudice to good order and discipline or service discredit. The defense can contest whether that link was established.
The related risk: spoliation and adverse inferences
Beyond a criminal charge, deleting potential evidence can produce collateral harm. In administrative and disciplinary settings, the destruction of relevant material can support an adverse inference that the missing data would have been unfavorable to the member. So a member who escapes an obstruction conviction may still face the practical consequence of a factfinder assuming the worst about what was deleted.
Practical guidance
The safest course when any investigation is foreseeable is straightforward: preserve everything and delete nothing, including on personal devices. Once a member has reason to believe proceedings are pending, even ordinary deletions can later be portrayed as an attempt to obstruct. A member who has already deleted material should disclose that fact to defense counsel immediately rather than compound the problem.
In short, yes, a service member can be prosecuted under Article 131b for deleting command emails from a personal device. The device’s private ownership offers no protection. What protects a member is the absence of knowledge of pending proceedings and the absence of intent to impede them, and those are precisely the issues on which a well-prepared defense will focus.
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.
Reading this article, or contacting any website on which it appears, does not create an attorney-client relationship between the reader and any law firm, attorney, or author. Every court-martial, nonjudicial punishment action, administrative separation, and security-clearance matter turns on its own facts, the charged articles, the convening authority, the service branch, and the evidence, and outcomes vary widely from one case to another.
Military law also changes over time. The Military Justice Act of 2016 (effective January 1, 2019) and subsequent National Defense Authorization Acts renumbered and rewrote many punitive articles, revised the Article 32 preliminary hearing, and altered sentencing, clemency, and appellate procedures. Statutes, regulations, executive orders, the Manual for Courts-Martial, and decisions of the service Courts of Criminal Appeals and the Court of Appeals for the Armed Forces may have been amended, superseded, or reinterpreted after this article was written, and article numbers or procedures cited here may have changed.
For these reasons, no reader should act or decline to act based on this content without first consulting a licensed attorney experienced in military justice about their own situation. The author and publisher make no warranty, express or implied, as to the accuracy, completeness, timeliness, or current applicability of the information provided, and disclaim any liability for any action taken or not taken in reliance on it. If you are facing investigation, charges, or an adverse administrative action, time limits may apply, and you should seek qualified counsel promptly.