An intense artillery fire by both sides caused severe damages to many buildings in Pruszków including train station, power plant, and two churches.

The city was occupied by Germany following the German–Soviet invasion of Poland, which started World War II in September 1939.

[8][9][10][11] During the 1944 Warsaw Uprising, the Nazis created the large Durchgangslager 121 (Dulag 121) transit camp in Pruszków on the site of the Train Repair Shops (Zakłady Naprawcze Taboru Kolejowego) to intern the evacuees expelled from the capital.

The SS and Gestapo segregated the Poles, who were then either deported to forced labour in Germany, sent to Nazi concentration camps, or expelled to more southern locations of German-occupied Poland.

[12] They included people from a variety of social classes and occupations (government officials, scholars, artists, physicians, merchants, and blue-collar workers), in varying physical conditions (the injured, the sick, invalids, and pregnant women), and of various ages from infants only a few weeks old to the elderly, aged 86 or more.

[14][15][16] Following the Soviet westward offensive, on 26 March 1945, the 16 members of the Polish Underground Government were invited by the Russians for talks, to a house in Pruszków on Armii Krajowej Street.

They were captured by the Soviet NKVD agents, transported to USSR, imprisoned, tortured and sentenced in Moscow during the so-called Trial of the Sixteen.

Due to its proximity to Warsaw, it is now home to several factories and companies, including Herbapol, Daewoo Electronics, L'Oréal Cosmetics as well as logistic centers.