[Alex van de Wetering]

Interesting pictures Jon. It´s always fascinating to see the post/war action of V2 rockets.

I have no information on the tracked vehicle, I assume it is US.

Interesting vehicle indeed. I seems to be based on Stuart bogies, tracks and sprockets, but uses 3 in stead of two bogies. The transmission cover/doors looks like M24 Chaffee.....and the overall look of the front and layout of the hatches also looks similar in design to the M24.
It almost looks like a mock-up or prototype which eventually led to the M19A1???

Alex