When one service member watches a peer commit misconduct and does nothing, commanders and prosecutors sometimes ask whether the bystander can be held accountable. The most likely vehicle is dereliction of duty under Article 92 of the Uniform Code of Military Justice (UCMJ), codified at 10 U.S.C. section 892. The answer is a qualified yes: failure to intervene can be charged as dereliction, but only when the service member actually had a duty to act. The existence of that duty, not mere presence at the scene, is what makes or breaks the charge. This article explains how the analysis works.
Dereliction of duty under Article 92
Article 92 contains three distinct theories of liability: violation of a lawful general order or regulation, failure to obey other lawful orders, and dereliction in the performance of duties. Dereliction is the third. To prove it, the government must establish that the accused had a certain duty, that the accused knew or reasonably should have known of the duty, and that the accused was derelict in the performance of that duty.
Dereliction can be committed in more than one mental state. It may be willful, meaning the accused intentionally failed to perform the duty; it may be by neglect, meaning the accused failed through carelessness or inattention; or it may be through culpable inefficiency, meaning the accused performed so inefficiently as to be blameworthy. Each carries a different character of fault, but all three require the threshold finding that a duty existed.
The duty requirement is the whole case
The first and most important element is duty. A service member cannot be derelict in performing a duty the member did not have. There is no free-floating obligation in military law for every service member to intervene in every wrongful act observed. The duty must come from somewhere identifiable. It may arise from a regulation, a standing operating procedure, the responsibilities of an assigned position, or a lawful order. A duty can also flow from a service member’s particular role at a given moment, such as a watchstander, a charge of quarters, a designated driver responsible for a vehicle, a noncommissioned officer responsible for subordinates, or a supervisor with oversight responsibilities.
This is where failure-to-intervene cases divide. A service member who is merely present when a peer commits misconduct, with no supervisory role and no specific duty bearing on the situation, generally has no legal duty to intervene, and absent such a duty there is no dereliction. By contrast, a service member whose assigned responsibilities encompass the situation may well have a duty to act. A team leader watching subordinates haze a junior member, a duty noncommissioned officer who sees a detainee mistreated on the watch, or a supervisor who observes a safety violation in an operation under the supervisor’s charge each occupies a position that can carry an affirmative obligation. For those members, standing by can be dereliction.
Peer versus subordinate, and why position matters
The word “peer” in the question is significant. A duty to intervene is far easier to establish where the misconduct involves a subordinate the accused is responsible for than where it involves a true equal. Supervisory authority brings supervisory duty. When the wrongdoer is a genuine peer over whom the accused has no responsibility, the government must point to some other source of duty, such as a regulation requiring all personnel to report or stop certain conduct, or a specific assignment giving the accused responsibility for the location or activity. Without that, a dereliction charge premised on failure to intervene against a peer rests on shaky ground.
Knowledge and the nature of the failure
Even where a duty exists, the government must show the accused knew or reasonably should have known of it, and that the failure to act was blameworthy. A service member who was genuinely unaware of the misconduct, who lacked a realistic opportunity to intervene safely, or who took reasonable steps that fell short has a defense to the dereliction element. The standard is not perfection but the diligence the duty reasonably demanded under the circumstances.
Other charges in the picture
Dereliction is not the only possibility, and the alternatives shape charging decisions. If a regulation specifically requires intervention or reporting, failure to comply may be charged as a violation of a general order or regulation under Article 92(1) rather than dereliction. Where the bystander did more than fail to act, for example by encouraging or aiding the misconduct, principal liability under Article 77 may apply because that provision reaches those who aid, abet, counsel, command, or procure the offense. If the bystander helped the offender avoid accountability after the fact, accessory liability under Article 78 may come into play. And depending on the conduct, the general article, Article 134, may reach behavior prejudicial to good order and discipline. Prosecutors choose among these based on what the evidence shows the bystander did and what duty the bystander had.
Bottom line
Military personnel can be charged with dereliction of duty under Article 92 for failing to intervene in peer misconduct, but only when they actually had a duty to act. Mere presence as a bystander, without a supervisory role or a specific source of duty, does not support a dereliction charge. The analysis turns on whether a regulation, position, order, or assignment imposed an obligation to intervene, whether the accused knew or should have known of that duty, and whether the failure to act was willful, negligent, or culpably inefficient. Supervisors and those with assigned responsibility face the greatest exposure; a true peer with no duty to act faces the least. Because the duty question is decisive and fact specific, anyone facing such a charge should obtain a careful analysis of the precise source of the alleged duty.
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.
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