What document outlines the standards of behavior expected from Marines?

The Uniform Code of Military Justice (UCMJ) is the foundational legal framework that establishes the standards of behavior expected from all service members, including Marines. It details various offenses and the associated legal consequences, thereby setting clear expectations for conduct within the military. The UCMJ is essential for maintaining discipline, order, and accountability across the armed forces, ensuring that all personnel understand the legal obligations they must adhere to.

While the Marine Corps Training Manual, the Anti-Drug Policy Document, and the Leadership Principles Handbook each address important aspects of Marine conduct and responsibilities, they do so within specific contexts. The Training Manual provides detailed guidance on operational procedures and training standards, while the Anti-Drug Policy Document focuses on substance abuse prevention and the consequences of drug use. The Leadership Principles Handbook outlines effective leadership strategies but does not serve as the overarching legal standard for behavior. In contrast, the UCMJ comprehensively encompasses all expected behaviors and legal consequences for violations, making it the most relevant document for outlining expected conduct for Marines.