The ethnic cleansing of Zamojszczyzna by Nazi Germany (German: Aktion Zamosc,[4] also: Operation Himmlerstadt)[5] during World War II was carried out as part of a greater plan of forcible removal of the entire Polish populations from targeted regions of occupied Poland in preparation for the state-sponsored settlement of the ethnic German Volksdeutsche.

The operation of mass expulsions from Zamojszczyzna region around the city of Zamość (now in Lublin Voivodeship, Poland) was carried out between November 1942 and March 1943 on direct order from Heinrich Himmler.

[6] It was preplanned by both Globocnik from Action Reinhard and Himmler, as the first stage of the eventual murderous ethnic cleansing ahead of projected Germanization of the entire General Government territory.

[7] In Polish historiography,[8] the events surrounding the Nazi German roundups are often named alternatively as the Children of Zamojszczyzna [pl] to emphasize the simultaneous apprehension of around 30,000 children at that time, snatched away from their parents transported from Zamojszczyzna to concentration camps and slave labour in Nazi Germany.

[9] According to historical sources the German police and military expelled 116,000 Polish men and women in just a few months during Action Zamość.

[10] Wartime fate of the Polish children from Zamojszczyzna was closely related to the German plans for the expansion of their own so-called "living space in the East", part of a broader Nazi policy called the Generalplan Ost.

At the beginning of war, the programme was mainly realised in western parts of Poland, including Wielkopolska, Eastern Silesia and Danzig-Westpreußen already controlled by Nazi Germany; but after Operation Barbarossa, it was continued throughout the General Government.

[1] People were divided into four main categories with the following code letters: "WE" (re-Germanization), "AA" (transport to the Reich), "RD" (farm-work for the settlers), "KI" (Kindertransport), "AG" (work in the General Government); and finally, "KL" (concentration camp).

[9] Dispossessed Polish families were sent to other transit camps as well, including Zwierzyniec in the Zamość County, which processed 20,000-24,000 Poles (12,000 between July and August 1943).

The Germans beat them with whips until the blood flew in case of slightest opposition, mothers and children alike.