Original German WWII identity tag, stamped 818 / 4. M.G. Kp. J.E.B. 500 — 4th Machine Gun Company, Infanterie-Ersatz-Bataillon 500 (Infantry Replacement Battalion 500), roster number 818. Inscription duplicated on both halves per regulation.

Infanterie-Ersatz-Bataillon 500 served as the replacement and training unit for the Wehrmacht's 500-series Bewährungsbataillone — probation battalions in which court-martialed soldiers could redeem their sentences through front-line service. These battalions were deployed to the most contested sectors of the Eastern Front and sustained exceptionally high casualties, making tags associated with the 500-series a sought-after and historically significant category.