The Munich Agreement permitted Nazi Germany's Adolf Hitler to annex the area, in 1938, into what he called the Sudetenland.

Just before the war began a complex of factories were built, which today is an industrial zone in the town of Jablonec nad Nisou.

During World War II, Reinowitz was the location of a subcamp of the Gross-Rosen concentration camp, providing forced labour for the German firm "Feinapparatenbau GmbH".

[1] Following World War II, in 1945, the town returned to Czechoslovakia and the German inhabitants were expelled under the terms of the Potsdam Agreement and Beneš decrees.

The site of the former LIAZ truck factory, a division of Škoda Auto open from 1952 to 2002, now houses several industrial companies such as TI Automotive and Tedom.