Recovered Territories in the context of "Territories of Poland annexed by the Soviet Union"

Operation Vistula (Polish: Akcja Wisła; Ukrainian: Опера́ція «Ві́сла») was the codename for the 1947 forced resettlement of close to 150,000 Ukrainians, Rusyns, Boykos, and Lemkos from the southeastern provinces of postwar Poland to the Recovered Territories in the west of the country.The action was carried out by the Soviet-installed Polish communist authorities to remove material support to the Ukrainian Insurgent Army. The Ukrainian Insurgent Army continued its guerrilla activities until 1947 in Subcarpathian and Lublin Voivodeships with no hope for any peaceful resolution; Operation Vistula brought an end to the hostilities.

In a period of three months beginning on 28 April 1947 and with Soviet approval and aid about 141,000 civilians residing around Bieszczady and Low Beskids were forcibly resettled to former German territories, ceded to Poland at the Yalta Conference at the end of World War II.

The Polish population transfers in 1944–1946 from the eastern half of prewar Poland (also known as the expulsions of Poles from the Kresy macroregion), were the forced migrations of Poles toward the end and in the aftermath of World War II. These were the result of a Soviet Union policy that had been ratified by the main Allies of World War II. Similarly, the Soviet Union had enforced policies between 1939 and 1941 which targeted and expelled ethnic Poles residing in the Soviet zone of occupation following the Nazi-Soviet invasion of Poland. The second wave of expulsions resulted from the retaking of Poland from the Wehrmacht by the Red Army. The USSR took over territory for its western republics.

The postwar population transfers were part of an official Soviet policy that affected more than one million Polish citizens, who were removed in stages from the Polish areas annexed by the Soviet Union. After the war, following Soviet demands laid out during the Tehran Conference of 1943, Kresy was formally incorporated into the Ukrainian, Belarusian and Lithuanian republics of the Soviet Union. This was agreed at the Potsdam Conference of Allies in 1945, to which the Polish government-in-exile was not invited.

The Soviet Military Administration in Germany (Russian: Советская военная администрация в Германии, СВАГ; Sovyetskaya Voyennaya Administratsiya v Germanii, SVAG; German: Sowjetische Militäradministration in Deutschland, SMAD) was the Soviet military government, headquartered in Berlin-Karlshorst, that directly ruled the Soviet occupation zone in Germany from the German surrender in May 1945 until after the establishment of the German Democratic Republic (GDR) in October 1949.

According to the Potsdam Agreement in 1945, the SMAD was assigned the eastern portion of present-day Germany, consisting mostly of central Prussia. Prussia was dissolved by the Allies in 1947 and this area was divided between several German states (Länder). German lands east of the Oder-Neisse line were annexed by Soviet Union or granted to Poland, and Germans living in these areas were forcibly expelled, having had their property expropriated and been robbed of most of their belongings whilst in transit to the American, British, and Soviet zones.

At the end of World War II, Poland underwent major changes to the location of its international border. In 1945, after the defeat of Nazi Germany, the Oder–Neisse line became its western border, resulting in gaining the Recovered Territories from Germany. The Curzon Line became its eastern border, resulting in the loss of the Eastern Borderlands to the Soviet Union.