Engineer overprint created by the Royal Canadian Engineers showing detail related to roads, bridges and anti-tank ditches. The overprint information was referenced from air photographs. This map was originally held by the Department of Defence, and was acquired by the Laurier Military History Archive (LMH) from the Directorate of History and Heritage, Government of Canada, in the 1990s. Digitization and georeferencing of the map was performed at the University of Waterloo.