Index/Locations/My Lai Massacre

My Lai Massacre

1968 U.S. war crime during the Vietnam War

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20 results
Jan 18, 2026
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What is the legal definition of a manifestly unlawful order under the UCMJ?

The UCMJ imposes a duty to obey lawful orders and makes disobedience punishable under Article 92, but American military law and international precedent reject obedience as a blanket defense when an or...

Jan 14, 2026
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How have courts defined 'patently illegal' orders under military case law?

Courts have treated a “patently illegal” military order as a narrow exception to the ordinary presumption that orders are lawful: it is an order whose criminality is so plain that “a person of ordinar...

Nov 25, 2025
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What are historical examples where servicemembers were prosecuted or acquitted for following orders later found unlawful?

Historical precedent shows that U.S. service members have both been prosecuted and, in other cases, acquitted or excused when they followed superior orders later judged unlawful; the key legal touchst...

Nov 26, 2025

What steps must a service member take to challenge or refuse an order deemed unlawful?

Service members are legally required to obey lawful orders and to refuse patently unlawful ones; Article 92 of the Uniform Code of Military Justice (UCMJ) and the Manual for Courts‑Martial frame that ...

Nov 21, 2025

Are there recent instances (post-2001) where soldiers were prosecuted or exonerated for following illegal orders and what precedents applied?

There are multiple post‑2001 instances where U.S. service members were prosecuted or investigated for actions taken while claiming they followed orders (notably Abu Ghraib prosecutions and My Lai is e...

Nov 21, 2025

What specific UCMJ articles and case law define unlawful orders for service members?

The Uniform Code of Military Justice (UCMJ) spells out the primary criminal provisions that govern obedience and disobedience: Article 92 (failure to obey order or regulation) and Article 90 (willful ...

Jan 7, 2026

How have courts‑martial historically treated claims of following superior orders (e.g., My Lai) under the MCM?

Courts‑martial have long rejected blanket immunity for "I was following orders," instead treating obedience to superior orders as a constrained defense: lawful orders must be followed, but manifestly ...

Jan 7, 2026

What steps should a service member take if they believe an order is unlawful under the MCM?

When a service member suspects an order is unlawful, the Manual for Courts‑Martial (MCM) frames the legal test and procedures that govern response: an order is presumed lawful unless it conflicts with...

Dec 17, 2025

What are examples of unlawful military orders

Unlawful military orders are legally defined as directives that require commission of a criminal act, violate the Constitution, U.S. law, or international law; historical touchstones include the My La...

Nov 28, 2025

What role did Vietnam and Abu Ghraib prosecutions play in evolving refusal-of-order doctrine?

Vietnam-era abuses (notably My Lai) and the later Abu Ghraib scandal became focal points in debates over when service members may refuse unlawful orders; reporting and official reviews tied Abu Ghraib...

Nov 27, 2025

What are historical cases where soldiers were prosecuted for following orders later deemed unlawful?

Historical prosecutions for following orders reach back at least to the Nuremberg trials, which established that “just following orders” does not excuse war crimes . U.S. cases such as Lt. William Cal...

Nov 27, 2025

What are landmark post-2001 cases of soldiers prosecuted for following illegal orders in the U.S. military?

There is widespread reporting and legal commentary that U.S. military law requires service members to refuse “patently unlawful” orders and that following illegal orders can expose troops to prosecuti...

Nov 26, 2025

How did the Calley rulings distinguish between manifestly unlawful orders and lawful military commands?

The Calley rulings applied a two-part test: an unlawful order can excuse a subordinate only if the accused did not actually know the order was unlawful and a “man of ordinary sense and understanding” ...

Nov 25, 2025

Which commanders were prosecuted for issuing unlawful orders and what precedents did those trials set?

Historical U.S. prosecutions for following or issuing unlawful orders include high-profile cases such as Lt. William L. Calley Jr. (My Lai), which set a precedent that “just following orders” is not a...

Nov 22, 2025

What legal tests and precedents do military courts use to determine an order is unlawful?

Military law presumes orders are lawful unless they violate the U.S. Constitution, federal law, lawful superior orders, or exceed the issuer’s authority; a military judge decides lawfulness as a quest...

Nov 21, 2025

Which landmark cases involved refusal of unlawful orders and their verdicts (e.g., My Lai, Nuremberg, Hamdan)?

Three well-known episodes illustrate the legal and moral debate over “refusal of unlawful orders”: the Nuremberg Trials rejected the superior‑orders defense and produced verdicts punishing many top Na...

Nov 21, 2025

What training changes did the U.S. military implement after Nuremberg regarding obedience and moral judgment?

After the Nuremberg trials the U.S. military and legal community rejected “just following orders” as an absolute defense for war crimes and taught that service members have a duty to refuse manifestly...

Nov 21, 2025

What precedents define a manifestly illegal order under military law?

The law requires service members to obey lawful orders but not manifestly illegal ones; courts and military practice set a high bar for what counts as “manifestly illegal,” and refusing such an order ...

Nov 21, 2025

Are there notable cases where refusal of an unlawful order led to acquittal or conviction?

There are historically notable examples where following or refusing orders affected outcomes: Lieutenant William Calley was convicted for carrying out orders at My Lai, illustrating that obeying manif...

Nov 21, 2025

How do rules of engagement and international humanitarian law affect determinations of unlawful orders?

Rules of engagement (ROE) and international humanitarian law (IHL) shape when an order is legally binding and when subordinates may be required to refuse it: U.S. military doctrine and the DoD Law of ...