1938: Two anti-Nazi spies

The Third Reich on this date in 1938 guillotined two civilians as French spies.

Seventy-one-year-old merchant Ludwig Maringer had sent French intelligence notes on German industrial production and armaments factories from Berlin.
Thirty-nine-year-old Marie Catherine Kneup had turned mole from the advantageous position of domestic in the household of a German spy.

The latter case specifically — both the execution of Marie Catherine and the prison sentence given her husband Albert — is the subject of the German-language novel Spatzenkirschen.

On this day..