East Upper Silesia

[1] The term is used primarily to denote those areas that became part of the Second Polish Republic on 20 June 1922, as a consequence of the post-World War I Treaty of Versailles.

Prior to World War II, the Second Polish Republic administered the area as Autonomous Silesian Voivodeship.

(Niederschlesiens Ostmark[5]) East Upper Silesia was annexed by Nazi Germany along with other Polish areas following the invasion of Poland in 1939, which triggered the outbreak of World War II.

Under Nazi rule, Upper Silesia included the cities of Beuthen, Gleiwitz, Hindenburg in Oberschlesien, Kattowitz, and Königshütte.

It also contained the rural districts (Landkreis) of Bendsburg, Beuthen-Tarnowitz, Bielitz, Kattowitz, Krenau, Ilkenau, Pless, Rybnik, Saybusch, Teschen, and Toszek-Gleiwitz.