Where is Zwittau Brinnlitz Czechoslovakia?

Zwittau and Brinnlitz are located in the Czech Republic, not Czechoslovakia, which was the former name of the country that existed from 1918 to 1992. Zwittau is known as Svitavy in Czech, and it is a town in the Pardubice Region. Brinnlitz is called Brníčko in Czech and is a village in the South Bohemian Region. Both Svitavy and Brníčko are in the Czech Republic.