The phrase was used as a charge in courts martial of the British Army in the 18th and early 19th centuries, although it was not defined as a specific offence in the Articles of War.
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Colonel Michael D. Murphy - Demoted to First Lieutenant after being charge with absence without leave; failure to obey order/dereliction of duty; false official statement; larceny; and conduct unbecoming an officer and a gentleman in violation of the Uniform Code of Military Justice (UCMJ) Articles 86, 92, 107, 121, and 133, respectively.