Sonnenburg ( Słońsk ) was captured by the Soviet Red Army in the spring of 1945 as the Second World War in Europe drew to a close . During the Potsdam Conference held from 17 July to 2 August 1945 Sonnenburg along with the rest of the recovered territories was awarded to postwar Poland , and renamed legally as Słońsk . Most of the German inhabitants fled ahead of the front or were expelled soon thereafter , as occurred throughout the former eastern territories of Nazi Germany . The town was repopulated with the Poles expelled by the Soviet Union from the formerly Polish territories of '' Kresy Wschodnie '' , and by settlers from central Poland . In 1947 Słońsk lost its town rights and was given the status of a village due to small population size
Potsdam Conference
Potsdam Conference
Słońsk