 Germany re-acquired Panemunė (with all of Memelland) on 23 March 1939 - its last peaceful territorial gain before the Second World War.So Panemunė (Übermemel) was reintegrated into the city of Tilsit.Following World War II, the whole area was seized by the Soviet Union and in 1947 Übermemel, renamed as Panemunė (like all the Klaipėda Region) became part of the Lithuanian Soviet Socialist Republic.