Beginning in September 1920, and until October 1921,[11] the camp also housed Red Army POWs captured during the Polish-Soviet War, especially after the Polish victory in the Battle of Warsaw. The presence of the large number of new prisoners resulted in severe overcrowding and unsanitary conditions.[4] Immediately after the arrival of the Russian prisoners, epidemics of cholera, dysentery, flu, tuberculosis and various forms of typhus broke out.[4] In January 1921 more than 560 prisoners died in the camp. Subsequently, conditions in the camp improved dramatically.