Under the Uniform Code of Military Justice (UCMJ), service members are required to obey lawful orders, but they can be criminally liable if they follow an order that is clearly unlawful, especially where it involves obvious violations of U.S. or international law such as war crimes or plainly criminal acts like murder or torture. The key idea in current military law discussions is that orders are presumed lawful, yet there is a narrow exception for “manifestly unlawful” orders—those that a person of ordinary sense would recognize as illegal—though the UCMJ itself does not give a neat, one-sentence definition, and courts often decide after the fact.

Core UCMJ framework

  • Articles 90, 91, and 92 of the UCMJ are the main provisions that deal with obeying or disobeying orders, and they all assume a duty to obey lawful orders from superiors.
  • Article 92 (10 U.S.C. § 892) specifically criminalizes failure to obey a lawful order or regulation, making refusal of a lawful order a punishable offense that can lead to nonjudicial punishment or court-martial.
  • At the same time, commentaries and defense guidance explain that a service member may be punished if they carry out an order they know to be unlawful, particularly when it involves conduct that is independently a crime (for example, targeting civilians or torturing detainees).

What makes an order “unlawful”?

Military law sources describe an order as unlawful when it directly conflicts with higher law or exceeds the authority of the person giving the order. Common examples include:

  • Orders requiring war crimes or clear law‑of‑armed‑conflict violations, such as intentionally attacking civilians, executing prisoners, or torturing detainees.
  • Orders that require violations of the Constitution or federal statutes, such as blatantly illegal domestic law‑enforcement tasks or summary punishment without due process.
  • Orders that are purely personal, with no valid military purpose, like using subordinates for private financial schemes or personal errands that fall outside command authority.

“Manifestly unlawful” and the reasonable person standard

  • Modern commentary often uses the phrase “manifestly unlawful” to capture the idea that a subordinate has a duty to refuse an order that is obviously illegal, even though that exact phrase is not tightly defined in the UCMJ text itself.
  • Guidance and case law apply a mixed standard: a service member can be liable if they know an order is unlawful, or if a “person of ordinary sense and understanding” in their position would have recognized its unlawfulness under the circumstances.
  • Because orders are presumed lawful and the line can be murky, refusing an order is legally risky; whether the refusal was justified is usually judged later by courts or tribunals, not in the moment.

Consequences of obeying or refusing

  • Obeying a clearly unlawful order can expose a service member to direct criminal liability for the underlying offense (for example, murder, assault, or maltreatment) in addition to separate misconduct charges.
  • Giving an unlawful order can itself lead to liability under provisions such as Article 92 (unlawful orders or dereliction), Article 133 (conduct unbecoming an officer), or Article 134 (service‑discrediting conduct).
  • Refusing a lawful order can trigger administrative sanctions, nonjudicial punishment, or prosecution under Articles 90, 91, or 92, whereas refusing a manifestly unlawful order can be a legally recognized defense if the order truly violated clear law.

Practical takeaways for troops

  • The working rule is: obey orders that are not clearly illegal, but you must not carry out an order that plainly requires you to commit a crime or obvious law‑of‑war violation.
  • When an order feels wrong but not clearly unlawful, current legal guidance stresses raising concerns through the chain of command, seeking legal advice if possible, and carefully documenting your understanding, because later review will focus on what a reasonable service member should have known at the time.

Information gathered from public forums or data available on the internet and portrayed here.