PX Shop » Flags, Patches, Pins » Regimental Distinctive Unit Insignia pins (sets of two) Regimental Distinctive Unit Insignia pins (sets of two) $14.00 Regiment Select an option 4th Cavalry Regiment 5th Infantry Regiment 8th Field Artillery 9th Infantry Regiment 9th Field Artillery 11th Field Artillery 12th Infantry Regiment 13th Field Artillery 14th Infantry Regiment 21st Infantry Regiment 21st Artillery Regiment 21st Anti-Aircraft Artillery Automatic Weapons Battalion 22nd Infantry Regiment 23rd Infantry Regiment 24th Infantry Regiment 25th Medical Battalion 25th S&T 25th Aviation 27th Infantry Regiment 34th Armor Regiment 35th Infantry Regiment 39th Infantry Regiment 50th Infantry Regiment 65th Engineers 69th Armor Regiment 75th Infantry Regiment 77th Artillery 87th Infantry Regiment 89th Field Artillery 89th Tank Battalion 125th Signal 159th Field Artillery 161st Infantry Regiment 725th Maintenance 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 40 50 75 100