I am looking for war letters and egodocuments from the front (1914-1918)

Private papers from the First World War and, to a lesser extent, from the Second World War, including war letters (“Feldpostbriefe”) or other egodocuments, may be found in our Nachlasssammlung. However, the Kriegsarchiv has never systematically collected this kind of source material but rather concentrated on securing the papers of general and senior officers.

For an overview see Martin Krenn/Michael Hochedlinger, Zeugen des Untergangs. Ego-Dokumente zur Geschichte des Ersten Weltkriegs im Österreichischen Staatsarchiv (Wien 2013).