ferdwebel 

To refer a person that didn't know some information or something.

You a ferdwebel, what an idiot.

ferdwebel by A ferdwebel September 29, 2021

feldwebel 

A Feldwebel is one of the lowest ranks you can have in the German army.
It's just above the infanry class.

Excusieren Sie mich herr Feldwebel die juden sind freigebrochen.

feldwebel by Feldwebel May 24, 2018