This United States Army regulation, Department of the Army Pamphlet DA PAM 670-1 Uniform and Insignia: Guide to the Wear and Appearance of Army Uniforms and Insignia January 2021, provides the implementation procedures for wear and appearance of Army uniforms and insignia. This pamphlet applies to the Regular Army, the Army National Guard/Army National Guard of the United States, and the U.S. Army Reserve, unless otherwise stated.