Thanks Degsy,
That's what I though. I live in France and a friend of mine tells me it's a WC-52 but another photo that I have of it, shows a big round cylinder siren with a red lens. He told me it was an ambulance. Could I perhaps be right in thinking that the red lens was for lights out driving, would that make any sense? but why a siren? WC "Weapons Carrier" meaning they normally pulled howitzers or??? Degsy, what was its main use?, I've seen a lot of photos with 50cals mounted.
Like you said, the ambulances always seem to have the hard-cap back end.
Thanks again
Perry