Over 230,000 of them were Jewish,[9] or 31.1% according to statistics.[10] Nazi Germany annexed Łódź directly to the new Warthegau region and renamed the city Litzmannstadt in honour of a German general, Karl Litzmann, who had led German forces in the area in 1914. The Nazi German authorities intended to "purify" the city. All Polish Jews were to be expelled to the Generalgouvernement eventually, while the non-Jewish population of Polish people reduced significantly, and transformed into a slave labour force for Germany.[9][11]