Significant number of 1938 Ford truck in Luftwaffe with unusual bed

[Ivan Podgornov]

Hi,
Are there any thoughts on this Ford ?
Basically it's typical 1938 model (everywhere radiator grille or bumper is seen - it's 1938).
Definetely it's not a Cologne plant.
Also, everywhere registration number is seen - it's Luftwaffee.

Taking in account large number of available photos (around 50) - these are not unique trofy.
Also please note group photo with a batch of new vehicles.
Through, at lease 3 "series" can be identified by presense and types of sub-lights and width-indicators.

What's strange:
- Body has steel frame - like US stake-bed. It's untypical for Europe manufacturers
- What can be a source of these trucks in such numbers ?
- One of the photos marked with something like date 08/11.39. if it's really date - than list of potential sources exclude BeNiLux countries.