Dee a n'ihu maka paragraf a - Ndagwurugwu Ọnwụ () na Fordon, Bydgoszcz, n'ebe ugwu Poland, bụ ebe ndị Nazi German gburu ọtụtụ mmadụ na mbido Agha Worldwa nke Abụọ na ili ili nke ndị Poland 1,200 <unk> 1,400 na ndị Juu gburu na Ọktọba na Nọvemba 1939 site na German "Selbstschutz" na ndị Gestapo. Ogbugbu ndị ahụ bụ akụkụ nke Intelligenzaktion na Pomerania, ihe ndị Nazi mere iji kpochapụ ndị ọgụgụ isi Polish na Reichsgau Danzig-West Prussia, nke gụnyere Pomeranian Voivodeship ("Polish Corridor"). Ọ bụ akụkụ nke nnukwu mgbukpọ nke weere ọnọdụ n'ebe nile ndị Germany na - achị na Poland
, nke a na-akpọ Operation Tannenberg.