The story form ZIP 31 is a fictional version of the story of the destruction of the town of Lidice.
[The Nazis destroyed Lidice as a reprisal action for the assassination and death of Reinhard Heydrich, a high-ranking Nazi leader. The Germans falsely claimed that two families from the town of Lidice were somehow connected to the assassins and the Czech resistance.
In Lidice, the Germans shot the men of the town, and then deported most of the women and children. Next, they burned the town to the ground. They promised to obliterate the name of Lidice from the map of Europe.]
https://encyclopedia.ushmm.org/content/en/article/lidice
These WEB stories are some of the most vehement anti-NAZi stories i've seen in comics.
Link to the book:
Web Complete Collection