Wear the exact uniform prescribed by your commanding officer, whether you are on duty or off duty.
Never wear a mixed uniform as, for instance, a part of the service uniform with the blue uniform.
Never wear any part of the uniform with civilian clothes. It is very unsoldierly, for example, to wear a civilian overcoat over the uniform or to wear the uniform overcoat over a civilian suit.
Keep the uniform clean and neat and in good repair.
Grease spots and dust and dirt should be removed as soon as possible.
Rips and tears should be promptly mended. In taking the field always wear new clothing as it may be some time before you are again supplied, and old clothing on field service goes to pieces rapidly.
Missing buttons and cap and collar ornaments should be promptly replaced.
There is but one correct and soldierly way to wear the cap. Never wear it on the back or side of the head.
The service hat should be worn in the regulation shape, peaked, with four indentations, and with hat cord sewed on. Do not cover it with pen or pencil marks. The chin cord should always be in order and fit for long field service.
Never appear outside your room or tent with your coat or olive-drab shirt unbuttoned or collar of coat unhooked. Chevrons, service stripes, and campaign medals and badges are a part of the uniform and must be worn as prescribed.