>>18372330The map in the background clearly shows Central Europe. It says “WARSCHAU” in big red letters, which is the German name for the Polish capital of Warsaw; and north of it you can see the Baltic coastline of former Prussia, with the Sambia peninsula jutting out.
The map also correctly labels the river Bug.
In fact, the map looks like there was a war between a greater German empire and Russia, with a Polish rump state caught in the middle.