Yes I was impressed with this pic too, hmm I can see why you thought of copy etc. I was hoping to find if the idea came from a photgraph, I know that similar looking water features in UK from that time would be brick. I'm looking to creating a diorama with combat engineers in the process of preparing a demolition or similar. I know concrete was produced in huge quatities in fortifcations but I'm wondering if the same is true of civil applications.
Maybe I'll find some pictures, however most reference titles concentrate on specific vehicles, 'happy snaps' and/or staged photos ie; Ardennes and the M8 with the two soldiers taking a breather.
I may need to do further digging.
It is better to be happy than historically or dimensionally retentive.