Minor sabotage
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A minor sabotage during World War II in Nazi-occupied Poland (1939–45) was any underground resistance operation that involved a disruptive but relatively minor and non-violent form of defiance, such as the painting of graffiti, the manufacture of fake documents, the disrupting of German propaganda campaigns, and the like. Minor-sabotage operations often involved elements of humor.
Kotwica graffito on Warsaw's Aviator Monument
Warsaw's Nicolaus Copernicus monument was the target of a celebrated minor-sabotage operation.
Grey Ranks
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"Grey Ranks" was a codename for the underground paramilitary Polish Scouting Association during World War II.
Polish Boy Scouts fighting in the Warsaw Uprising
Jan Kiliński statue
Postmen during the Warsaw Uprising