1938 Austria Nazi Bill. Need Translation And Stamp Usage Help

This was included in a cover lot I acquired recently. It's printed on extremely fragile paper. It had multiple tears that I had to stabilize with archival mending tape.

Can someone provide a translation?

Also, why would a stamp have been affixed? There is no information at all on the back side and I can find no comparables anywhere online. Was this some sort of political mass mailing where every resident received one, so no address/recipient information was necessary, but postage still had to be paid?

Thanks.

here you find more information:
https://austria-forum.org/af/AEIOU/Seestadt_Aspern

search for the text:
"Das nationalsozialistische Deutschland grüßt sein nationalsozialistisches Österreich und die neue nationalsozialistische Regierung in treuer, unlösbarer Verbundenheit. Heil Hitler!"

then you can use the Google translator to translate all the text in the link. I think this will help.

Thank you for that link. If these were leaflets dropped by the German Luftwaffe, why (and how) would they have been stamped?

Or was there also a mailed propaganda campaign?

rev,

This was definitely part of a German propaganda campaign associated with the Anschluß, though I can't say with certainty how the bill was distributed. Might help if I could find the address of that PO, but I don't have access to my references at the moment.

The date on the cancel is the date the German army rolled into Austria. The handstamped text at upper left is "Franz Ferdininand Kaserne", an army barracks in Vienna. The text of the bill itself translates roughly as "National Socialist Germany greets National Socialist Austria and the new National Socialist government in loyal, inseparable solidarity. Heil Hitler!"

Most likely, either a bulk mailing by the Germans or someone stamped and cancelled it as a souvenir.