Kriegslokomotive

thumb|300px|The best-known and the most produced German war locomotive, or Kriegslokomotive: DRB Class 52 Kriegslokomotiven (, singular: Kriegslokomotive) or Kriegsloks were mostly coal-fired steam locomotives produced in large numbers during the Second World War under Nazi Germany.

Their construction was tailored to the economic circumstances of wartime Germany along with conquered and occupied territories across Europe, taking account of the shortage of materials and oil, the transportation of goods in support of military logistics, ease of maintenance under difficult conditions, resistance to extreme weather, limited life and the need for rapid, cheap mass production. In order to meet these requirements, economic drawbacks such as relatively high fuel consumption had to be accepted. Forced labour was used in the construction of some of the locomotives; German locomotive building firms employed prisoners from concentration camps and foreign, mostly Polish workers.