In the initial months of the German occupation,
Pomerania was the region of Poland where Nazi terror took its most brutal form. Even against this background, the German repressions against the population of Bydgoszcz were exceptionally severe, making the city one of the symbols of German atrocities committed in occupied Poland. Arrests and executions during the early days of the occupation, carried out by
Wehrmacht soldiers and members of
Einsatzgruppen, initially occurred in a chaotic atmosphere and served as acts of revenge for the so-called
Bloody Sunday of 1939 (
Bromberger Blutsonntag) and for the resistance put up by the local Civic Guard against the advancing German forces. These repressions later evolved into an organized extermination campaign aimed at eliminating the Polish intelligentsia and leadership class in Bydgoszcz. This was, in fact, only one element of the widespread extermination actions that the German occupiers carried out across Pomerania as part of the so-called
Intelligenzaktion. From late September 1939, a series of German "cleansing operations" took place in Bydgoszcz, targeting specific professional groups, such as teachers and Catholic clergy, as well as social circles and members of organizations and associations promoting Polish culture, including the , the
Maritime and Colonial League, and the Union of Insurgents and Soldiers. Jews were also a primary target of the occupiers. On 14 October 1939, a roundup of Polish teachers resulted in the arrest of 186 educators. On October 19, a roundup of members of the Polish Western Union led to the arrest of 91 individuals, including 21 women. On October 20, a large roundup near Kujawska Street captured approximately 1,200 people, among whom 27 were identified based on proscription lists, police files, or denunciations by local
Volksdeutsche. In November, arrests of Catholic priests began. A wide-reaching "pacification action" (
Befriedungsaktion) was conducted on November 11, coinciding with
Poland's National Independence Day. This operation, involving 115 groups of
Gestapo,
Kripo,
Schutzpolizei officers, and members of
Selbstschutz, resulted in 3,800 detentions. The 20-person group of Gdańsk SS officers was led by criminal counselor (
Kriminalrat) . He worked with a small SD unit within EK 16, led by
SS-Sturmbannführer Dr. Rudolf Oebsger-Röder. Lölgen's commission decided which prisoners would be released, deported to the
General Government, sent to concentration camps, or executed on the spot. German women would occasionally visit the camp to select individuals for execution by falsely claiming they had participated in Bloody Sunday. Those sentenced to death were executed without trial in secluded areas near Bydgoszcz. Initially, executions took place in , the woods near
Borówno Lake, areas around
Otorowo, and especially in trench lines near the village of
Tryszczyn. The choice of execution sites depended on factors such as accessibility, proximity to the city, and terrain features. The murders were typically carried out by members of
Selbstschutz, a paramilitary formation composed of ethnic Germans living in pre-war Poland. == Crime in the Valley of Death ==