In 1945 the Red Army was supposed to liberate Upper Silesia from Nazi oppression, instead it brought destruction, suffering and death. Among the victims were Sisters of Saint Elizabeth. The nuns stayed in the area mainly due to their principles, driving them to help children, elderly and ill people under their care. They met the same fate as thousands of other women „liberated” by the Red Army. The followers of blessed Maria Merkert paid for devotion to fellow humans with their lives. Dozens of nuns were murdered with malice (ten of these martyrs are undergoing a beatification process); dozens died in the ruins of bombed buildings; many were also brutally raped. It is difficult to establish the number of nuns who died from diseases and weakness caused by wartime conditions. The author shows both the lives of individual nuns and the history of monasteries and convents in that terrible time. The greatest harm came to the ‘grey sisters’ of Saint Elizabeth from the Nysa convent, the home of this religious institute. These old and ailing women were treated despicably by degenerate Red Army soldiers. There were instances of kindly treatment of the nuns by soviet soldiers, however those were rare. After post-war chaos was tamed the nuns were subjected to further oppression by the communist regime. Under the new organisational structure (adjusted for the change in country’s boarders) they continued their work of Christian charity.