What document provides a code of military criminal law that applies to all Service members?

The Uniform Code of Military Justice (UCMJ) is the foundational document that establishes the legal framework of military law applicable to all branches of the U.S. armed forces. It outlines offenses, procedures, and the military justice system, ensuring that Service members are held accountable under a set of laws specifically tailored to the military context.

The UCMJ addresses unique circumstances that may arise in military operations, such as insubordination, desertion, and conduct unbecoming an officer. This code is essential for maintaining discipline, ensuring justice, and protecting the rights of Service members as well as the integrity of the military organization.

Other documents, while they may provide guidelines or regulations for military operations or administrative procedures, do not serve as the codified legal authority regarding criminal law for Service members like the UCMJ does. This highlights the unique nature and necessity of the UCMJ in maintaining law and order within the military.