This is quite an interesting thread. From my limited knowledge I'd say offhand that Mercedes did not in fact build diesels for the Kriegsmarine. Uboote etc used MAN as already mentioned. Not sure about Schnellboote but I suspect the same. In terms of military engines I think Daimler Benz only built Aero engines. The DB600 series that powered various Messerschmitt fighters etc.

They were the primary designer and producer of both the Panzer Mk111 and the Sturmgeschutz assault guns based on the Mk111 but both of these used Maybach engines.

- 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