Most of the railway guns were placed within in the organisation of the German army, das Heer. We follow the locations at the European coast from north to south. There is a total view and a page with general information on the transport issues. An other page brings you information on the retreat of some batteries from France that stranded in Sluiskil in the Netherlands.
Mainsource: Eisenbahnartillerie, Wolfgang Gückelhorn and Detlev Paul, Helios Verlag, 2014.
A propaganda photo of the K 12 gun.