The Manual for Courts-Martial (MCM), United States (2012 Edition) updates the MCM (2008 Edition). It is a complete reprinting and incorporates the MCM (2008 Edition), including all amendments to the Rules for Courts-Martial, Military Rules of Evidence (Mil. R. Evid.), and Punitive Articles made by the President in Executive Orders (EO) from 1984 to present, and specifically including EO 13468 (24 July 2008); EO 13552 (31 August 2010); and EO 13593 (13 December 2011). This edition also contains amendments to the Uniform Code of Military Justice (UCMJ) made by the National Defense Authorization Acts for Fiscal Years 2009 through 2012. Some of the significant changes are summarized and listed below. This summary is for quick reference only and should not be relied upon or cited by practitioners in lieu of the actual provisions of the MCM that have been amended.The MCM (2012 Edition) includes unique changes warranting attention.