From 1933-45 it was the site of the large German government radio station Transmitter Heilsberg . The town was heavily damaged after its conquest by the Soviet Red Army during World War II in 1945 . As part of territorial changes demanded by the Soviet Union at the Potsdam Conference , the town became part of Poland , and was gradually resettled by Poles , many of them from the parts of eastern Poland annexed by the Soviet Union
Potsdam Conference
Potsdam Conference
Lidzbark Warmiński