a. Authorization. Regimental distinctive insignia (RDI) of a design approved by the Institute of Heraldry, U.S. Army, are authorized and prescribed for wear by all soldiers affiliated with a regiment or whole-corps regiment, as described in AR 600-82 and NGR 600-82.
b. How worn.
(1) Males.
(a) On the Army green, white, and blue uniforms, and the AG 415 shirt, males wear the RDI centered 1/8 inch above
the top of the pocket flap, or 1/4 inch above any unit awards or foreign badges that are worn. When the coat lapel obscures the insignia, soldiers may wear the RDI aligned to the right edge of unit awards or the nameplate. Wear of the RDI on the AG 415 shirt is optional (see fig 28.140).
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(b) On the white and blue mess and evening mess uniforms, male personnel wear the RDI on the right lapel. On the blue mess uniform, the RDI is worn centered on the satin facing, 1/2 inch below the notch in the lapel. On the white mess uniform, the RDI is worn 1/2 inch below the notch, centered on the lapel. The RDI is worn so that the vertical axis of the insignia is perpendicular to the ground (see fig 28.141).
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(2) Females.
(a) On the Army green, blue, and white uniforms, the Army maternity tunic, and the AG 415 shirt, females wear the RDI centered 1/2 inch above the nameplate, or 1/4 inch above any unit awards or foreign badges that are worn. When the coat lapel obscures the RDI, soldiers may wear the RDI aligned to the right edge of unit awards or the nameplate. Wear of the RDI on the AG 415 shirt is optional (see fig 28.144).
(b) On the blue mess and evening mess, and the new version white mess and evening mess uniforms, females wear the RDI centered on the right lapel, with the top of the RDI aligned with the top row of miniature medals. On the black mess and evening mess, and the old version white mess and evening mess uniforms, females wear the RDI centered on the right side of the jacket (not on the lapels). The RDI is centered between the lapel and shoulder seam, with the top of the RDI aligned with the top row of miniature medals. The RDI is worn so that the vertical axis is perpendicular to the ground (see fig 25.2).
(3) The RDI and DUI will be the same for soldiers who are assigned to, and affiliated with the same unit. Soldiers who are assigned to a unit or agency not authorized a DUI will wear the RDI on the beret and the black pullover sweater in lieu of a DUI (see fig 28.139).