If you go to this link and scroll down the page you will find a couple of different Mercedes Benz L1500 series vehicles. I think the one in your picture is definitely from that series. I also think the staff car in the picture you found with Skorzeny and his SS comrades is certainly a Horch.

http://www.axishistory.com/index.php?id=5828

- Peter.

edit. Ok I'm starting to have fun with this. Now that the vehicle is ID'd here's another link with perhaps the best info on the L1500 1.5 ton truck chassis yet.

http://www.achtungpanzer.com/votw/mb1500a.htm

- Peter.

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2021 Chevrolet Spark
Formerly...
2000 GMC Sonoma
1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles.
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S