Hi TGF/Wayne:
I don't want to stay off topic too long here, but I agree with you that it gets a bit frustrating here from time to time when all we are doing is trying to solve a riddle.
For my part, I came here to learn, just as much as to compete for puzzle points.
Speaking of learning, in now looking at hundreds and hundreds of photos of airfield support vehicles, I have learned that the markings on the lower part of the vehicle seem to be the standard identification method for mobile air traffic control towers worldwide.
The alternating squares are painted red and white.
As well, some of these vehicles are quite sophisticated. I found several that had a mechanical type of "scissors" mechanism for the rear body so it could be lifted up several meters for better visibility and then lowered again for normal driving.
Another bonus for me regarding this puzzle is that I found 4 images of WWII vehicles of this type which I have now added to my document files as they fit into my primary field of research.
Keep going Wayne and if I find anything of interest I will post it if I think it might help. Right now I am lost as the puzzle vehicle does not fit any identification characteristic criteria that I have seen.
Bill