DA PAM 670-1: 21-24. Insignia representing regimental affiliation
Quick Answer
Regimental affiliation insignia may be either the RDI (based on branch, corps, or PMOS) or DUI (based on a unit in which the Soldier is serving or previously served). Soldiers may choose which to wear. The RDI or DUI worn for regimental affiliation follows the same placement rules as the DUI on the pullover sweater, beret, and service uniform.
Important
Unit and command policies may be more restrictive than AR 670-1. Always verify with your chain of command for local policies.
Official Source
View DA PAM 670-1, Section 21-24 (Page 256)Full Details
21-24. Insignia representing regimental affiliation
a. Authorization. AR 670–1 authorizes insignia used to represent regimental affiliation to consist of either the RDI
or DUI. A Soldier’s regimental affiliation using an RDI is based on a Soldier’s branch, corps, or special branch as
determined by PMOS or specialty. A Soldier’s regimental affiliation using a DUI is based on a unit in which the
Soldier is serving or previously successfully served. Soldiers may wear the RDI for their affiliated regiment or may
wear the DUI for a unit in which they are serving or have previously successfully served based off their assignment
history as indicated in their personnel record.
b. How worn. The RDI or DUI, when worn as insignia to represent regimental affiliation, are worn as outlined in
paragraph 21–22. Soldiers (except chaplains, general officers, a CSM assigned as the SEAC, the SMA’s enlisted staff
members) wear the DUI centered above the nameplate on the pullover sweater, with the top edge of the insignia 1/4
inch below the top edge of the patch on the sweater. Soldiers assigned to units not authorized the DUI wear the RDI
on the pullover sweater in the same manner as the DUI (see figs 21–139 and 21–140). Chaplains wear their branch
insignia, general officers wear the RDI, a CSM assigned as the SEAC wears the SEAC insignia, the SMA and enlisted
staff members assigned to the office of the SMA wear the SMA insignia in the same manner. All Soldiers may adjust
the placement of the DUI or RDI up or down on the patch to allow for large DUI or RDI or to adjust to body config-
uration.
Related Figures

Figure 21-139: Wearing distinctive unit insignia or regimental distinctive insignia on black pullover
DA PAM 670-1, Page 254
Figure 21-139 from DA PAM 670-1
View in PDF
Figure 21-140: Wearing distinctive unit insignia or regimental distinctive insignia on heritage green 564 pullover
DA PAM 670-1, Page 255
Figure 21-140 from DA PAM 670-1
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Disclaimer: This information is provided for educational purposes only. AR670.com is not an official U.S. Army resource. Always verify guidance with official publications and your chain of command.