Dee ihe ọzọ maka paragraf a - Tupu afọ 1945, ebe a bụ akụkụ Germany (East Prussia). Mgbe Agha Worldwa nke Abụọ gasịrị, e debere mpaghara ahụ n'okpuru nchịkwa Polish dị ka Nkwekọrịta Potsdam nke post-war. Ndị Germany gbapụrụ
ma ọ bụ chụpụ ma jiri ndị Poland chụpụrụ site na mpaghara Polish ndị Soviet Union jikọtara ma ọ bụ manyere ịbanye na mpaghara ahụ site na Operation Vistula na 1947.