Yes, and this defense rests on a point built into the offense itself: the crime of disobedience requires a lawful order. Articles 90 and 92 of the UCMJ punish disobeying or failing to obey, but they reach only lawful orders, so if the order was not lawful, an essential element is missing. That is a different posture from defending someone who carried an unlawful order out; here, the service member refused, and the order’s unlawfulness is the shield.
Lawfulness is an element, not an excuse
The structure matters. Because Article 90 (willfully disobeying a superior commissioned officer) and Article 92 (failure to obey an order or regulation) criminalize disobedience of a lawful order, the government must establish that the order was lawful. When the defense shows the order was not lawful, it is not pleading an excuse, it is showing the offense was never complete. The fact that an order is unlawful provides a defense to a charge of disobeying it.
The presumption that makes it hard
The catch is a strong starting presumption: orders are presumed lawful, and a service member generally must obey. The law does not invite soldiers to second-guess routine orders. An order is unlawful when it violates the Constitution, U.S. law, or military regulations, or directs the commission of a crime, but the bar to treat refusal as justified is high.
The operative standard is “manifestly unlawful”, the illegality must be plain and obvious on its face. Orders to target civilians, torture detainees, falsify official records, or commit plainly criminal acts cross that line. Ambiguous or merely questionable orders generally do not, which is why unilateral refusal carries real risk.
The practical reality
Because of that presumption, the practical advice is cautious. A service member who doubts an order’s legality should, where possible, seek clarification through the chain of command and consult legal counsel promptly, rather than simply refusing, because if a court later finds the order was lawful, the disobedience stands. The defense is genuine, but it succeeds on clearly unlawful orders, not on disagreement.
Consider a member who refused an order they believed was illegal: because lawfulness is an element of the offense, the attorney argues a manifestly unlawful order cannot support a disobedience conviction.
The throughline is that questioning an order’s legality is a real defense because lawfulness is part of the offense. Orders are presumed lawful and must usually be obeyed, but a manifestly unlawful order, one plainly illegal on its face, cannot be the basis of a disobedience conviction, which is exactly the ground this defense stands on.
Frequently Asked Questions
Is disobeying an order always a crime?
No. Articles 90 and 92 punish disobeying a lawful order, so if the order was not lawful, an element of the offense is missing and the unlawfulness provides a defense.
When is an order considered unlawful?
When it violates the Constitution, U.S. law, or military regulations, or directs the commission of a crime, and to justify refusal the illegality generally must be manifestly unlawful, plain and obvious on its face.
What should a service member do if they doubt an order’s legality?
Where possible, seek clarification through the chain of command and consult legal counsel promptly, because orders are presumed lawful and refusing a merely questionable order carries significant risk.
This article is general information about the lawfulness of orders. It is not legal advice and does not create an attorney-client relationship. Application is fact-specific and the law can change. Anyone facing this situation should consult a military attorney before acting.
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