Title 10 of the United States Code outlines the role of United States Armed Forces. It provides the legal basis for the roles, missions and organization of each of the services as well as the United States Department of Defense. Each of the five subtitles deals with a separate aspect or component of the armed services.

• Subtitle A—General Military Law, including Uniform Code of Military Justice
• Subtitle B—Army
• Subtitle C—Navy and Marine Corps
• Subtitle D—Air Force and Space Force
• Subtitle E—Reserve Components
• Subtitle F—Alternative Military Personnel Systems