, 21 October 1939 The territory of the Reichsgau was inhabited predominantly by ethnic Poles, by German settlers (a minority of 16.7% in 1921), and by Polish Jews. The Polish population was subjected to various
crimes, including the
Intelligenzaktion genocidal campaign. On 20–23 October 1939 alone, the German police and
Einsatzgruppe VI carried out mass public executions of some 300 Poles in various towns in the region, i.e.
Gostyń,
Kostrzyn,
Kościan,
Kórnik,
Krobia,
Książ Wielkopolski,
Leszno,
Mosina,
Osieczna,
Poniec,
Śmigiel,
Śrem,
Środa and
Włoszakowice, to terrorize and pacify the Poles. During
Aktion T4, the
SS-Sonderkommandos gassed over 2,700 mentally ill people from the psychiatric hospitals in
Owińska,
Dziekanka and
Kościan. Most of the Jewish residents were eventually imprisoned at the
Łódź Ghetto (officially established in December 1939) and exterminated at
Chełmno extermination camp (, operational from December 1941 onwards). From 1940, the occupiers also operated several forced labour camps for Jews in the region. embarked on a program of complete removal of the formerly Polish citizenry upon his nomination by
Heinrich Himmler. The plan also entailed the re-settling of ethnic Germans from the
Baltic and other regions into farms and homes formerly owned by Poles and Jews. He also authorized the clandestine operation of exterminating 100,000
Polish Jews (about one-third of the total Jewish population of
Wartheland), in the process of the region's complete "
Germanization". In the first year of World War II, some 630,000 Poles and Jews were forcibly removed from
Wartheland and transported to the occupied
General Government (more than 70,000 from Poznań alone) in a series of operations called the
Kleine Planung covering most
Polish territories annexed by Germany at about the same time. Both Poles and Jews had their property confiscated. By the end of 1940, some 325,000 Poles and Jews from the
Wartheland and the so-called
Polish Corridor were expelled to General Government, often forced to abandon most of their belongings. Fatalities were numerous. Many Poles were also enslaved as
forced labour and either sent to forced labour camps or German colonists in the region or deported to Germany and other German-occupied countries. In 1941, the Nazis expelled a further 45,000 people, and from autumn of that year, they began killing Jews by shooting and in
gas vans, at first spasmodically and experimentally. Reichsgau Wartheland had the population: 4,693,700 by 1941. Greiser wrote in November 1942: "I myself do not believe that the Führer needs to be asked again in this matter, especially since at our last discussion with regard to the Jews he told me that I could proceed with these according to my own judgement." in Poznań, used by the German occupiers as an improvised
gas chamber There were numerous camps and prisons in the province, including a
subcamp of the
Gross-Rosen concentration camp in
Owińska, and a subcamp of the
Stutthof concentration camp in
Obrzycko. Particularly notorious camps and prisons included the
Fort VII concentration camp in Poznań, the
Radogoszcz prison in Łódź, a prison camp in
Żabikowo, where mostly Poles were imprisoned, but also Luxembourgers, Dutch, Hungarians, Slovaks, Americans, Russians and deserters from the
Wehrmacht, and many were tortured and executed, and the prison in
Sieradz, whose mostly Polish and Jewish prisoners were subjected to insults, beatings, forced labour, tortures, executions, and were even given meals prepared from rotten vegetables, spoiled fish and dead dogs, thus often dying of exhaustion,
starvation or torture. Over 270,000 Polish children aged 10–18 were subjected to forced labour in the region of
Greater Poland, which, in addition to German profits of 500 million
marks, was aimed at the children's biological destruction. In Łódź, the occupiers operated a
racial research camp for expelled Poles, and a concentration camp for
kidnapped Polish children of two to 16 years of age from various parts of occupied Poland. In the racial research camp, Poles were subjected to racial selection before deportation to forced labour in Germany, and Polish children were taken from their parents and sent to
Germanisation camps. The children were given new German names and surnames, and were punished for any use of the Polish language, even with death. ==Polish resistance==