NAZI ENVELOPE

[MObushwhacker]

Any information or translation on this Nazi cover, It appears to be from or address to some person of authority or rank. The envelope is made from what I believe is a detention sheet or sort

[Mackaydon]

Einschreiben in this usage means Registered mail . Munchen is Munich, Germany
The Kommandeur Der Gendarmerie was a police officer in charge of a rural region who reported to an officer of higher rank within the Ministry of the Interior. Gendarmierie (Geno) Kreisfuhrer is the head of a district police unit. Ingolstadt is a city in the Free State of Bavaria, in the Federal Republic of Germany. It is located along the banks of the Danube River, in the center of Bavaria.
Don...

[DCMatt]

Gesundheit!