Dog tags worn since the war in 1870. Were carried out in various forms, sizes and materials – there was no uniform pattern. Most were small, brass, round or oval, the top had two holes on the carrier string. For immortals quickly stuck the nickname “Hundemarke” (Pl. ticket for the dog). There were also versions for officers as jewelery with precious materials. Was commanded at least that on the dog tags were name and unit: engraved, etched, stamped or hammered. In 1915 was introduced the standard model Immortelle – galvanized plate with dimensions of 5 x 7 inches, above the name of the holder, a division of replacement / training and unit number less than half and the number of branch units – when changing stamped new and old strikeout.
In the end of year 1917 came the newest and latest in a model similar to the old in terms of size and material, but now had three long gap in the middle (where the target fracture) and below another hole. This formula has been used by the Reichswehr and the Wehrmacht. Dog tags were worn on a string – his performance was not defined by law, but generally twisted rope used in the respective national colors.