History of Lithuania German-held city during the ill-fated Operation Ostra Brama. The Red Army captured Vilnius with Polish help on 13 July. The Soviet Union re-occupied Lithuania and Joseph Stalin re-established the Lithuanian Soviet Socialist Republic in 1944 with its capital in Vilnius. The Soviets secured the passive agreement of the United States and Great Britain (see Yalta Conference and Potsdam Agreement) to this annexation. By January 1945, the Soviet forces captured Klaipėda on the Baltic coast. The heaviest physical losses in Lithuania during World War II were suffered in 1944–1945, when the Red Army pushed out the Nazi invaders. It is estimated
Office of the Chief Archivist of Lithuania Office of the Chief Archivist of Lithuania The Office of the Chief Archivist of Lithuania is a government agency, which participates in the shaping of national policy in the field of management and use of documents and archives, as well as implements this policy, supports the Chief Archivist of Lithuania in the carrying-out of state administration of the field of documents and archives. The emergence of archives in Lithuania is associated with the formation of the Lithuanian state in the first half of the 13th century. The old Lithuanian chancery archives of Grand Duke and King Mindaugas did not survive: