Dear Wayne,
This is a great diorama with a fantastic background. So far all is correct.
But all bridges ( certainly for cars and pedestrians) in the Ardennes and especially in the 1940's were made of local stone . This looks more like a railway bridge.
In Holland and Flanders however bridges were mostly made of steel ( flat country ,lack of hills and rock country and therefore lack of quarries).
Maybe a better title would be " Through the low countries" ( please google "Bridges over the Meuse river in Holland" and compare with the Bridges over the rivers running through the Ardennes in Belgium)
I hope I do not upset you with these comments
Guy