These sample models were made using the Battleground 1940 Blender file and the Europe Asunder: Great War Western Front Blender file. To be specific, these are the WWI assets with their legs swapped for longer WWII equivalents. The assets of both Blender files are entirely mutually-compatible.
A brief video shows the process here.
Please consider supporting Battleground 1940: Blitzkrieg when it launches on September 27th.
A longer video also showing the WW2 Blender file is available here.
