Coats of arms of US Air Defense Artillery regiments are heraldic emblems associated with Field artillery, Air Defense Artillery, and coast artillery regiments in the US Army. Under Army Regulation 840-10, each regiment and separate table of organization and equipment (TOE) battalion of the US Army is authorized a coat of arms to be displayed on the organization's flag, called the "colors." This coat of arms usually forms the basis for the unit's distinctive unit insignia (DUI), the emblem worn by all members of the unit on their service uniforms.