Set of two older 23rd Infantry Regiment distinctive unit insignias (DUIs) "We Serve", with only minor wear to finish. One is hallmarked for the Antaya A26 and the other is V-21 for Vanguard. Comes with clutches, not shown. 
4th Battalion (Mechanized) 23rd Infantry Regiment was alerted for overseas deployment and on 22 January 1966 it became part of the 25th Infantry Division (Tropic Lightning)