Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was under German occupation. Local Polish people were expelled or forced into labor and concentration camps. In 1939, the occupiers renamed the town to Seenbrück in attempt to erase traces of Polish origin. Four Poles from Stęszew were also murdered by the Russians in the large Katyn massacre in April–May 1940.[3] The Polish resistance was active in Stęszew. The leaders of the local unit of the Narodowa Organizacja Bojowa organization were arrested by the Germans in October and November 1941, and then sentenced to death and executed the following year.[4] In January 1945, a German-perpetrated death march of prisoners of various nationalities from the dissolved camp in Żabikowo to the Sachsenhausen concentration camp passed through the town.[5] The liberation of Stęszew and neighbouring villages took place in January 1945.[1]
Sport
The town's most notable sports club is Lipno Stęszew with football and field hockey sections.[6]
^Atlas historyczny Polski. Wielkopolska w drugiej połowie XVI wieku. Część I. Mapy, plany (in Polish). Warszawa: Instytut Historii Polskiej Akademii Nauk. 2017. p. 1a.
^"Katyń – ocalić od zapomnienia...". Wieści Stęszewskie (in Polish). No. 7. Stęszew. 2008. p. 24. ISSN1233-6033.
^Encyklopedia konspiracji Wielkopolskiej 1939–1945 (in Polish). Poznań: Instytut Zachodni. 1998. pp. 303, 336, 558, 566. ISBN83-85003-97-5.
^"Ewakuacja piesza". Muzeum Martyrologiczne w Żabikowie (in Polish). Retrieved 1 December 2023.