I have just recently received a copy of records from the StadtArchive in Gera where my grandfather's family was living showing that my grandfather's brother, Arno Werner Geissler, died in combat 22 June 1915 in Zarndec. No-one in the Archives, and no-one else I have contacted, has any idea where Zarndec is/was. There is no indication in Arno's records of his unit; his brother my grandfather was serving at least some of the time with the Grenadier-Regt. König Friedrich I (4.Ostpreußisches) Nr.5, (Danzig) XVII Armee Korps, German Imperial Army.
Can anyone help? Does this location ring any bells?