Index/People/Lieutenant William Calley

Lieutenant William Calley

Fact-Checks

5 results
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 21, 2025
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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 6, 2026

How have courts-martial and military tribunals interpreted ‘manifestly illegal’ orders?

Courts-martial and military tribunals have settled on a dual obligation: service members must obey lawful orders but must refuse orders that are so clearly illegal that “a man of ordinary sense and un...

Nov 26, 2025

Which UCMJ articles and case law define or illustrate unlawful orders?

The Uniform Code of Military Justice (UCMJ) treats orders as presumptively lawful but creates criminal liability for obeying clearly illegal commands; Article 92 (failure to obey order or regulation) ...

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...