Noun
A kind of militia in Poland, consisting of the gentry, which, in case of invasion, was summoned to the defense of the country.
Source: Webster's dictionaryThe king could promulgate new laws, raise taxes, or call for a levée en masse ( pospolite ruszenie ) only with the consent of the sejmiks, and the nobility were protected from judicial abuses. Source: Internet
Members of the szlachta had the personal obligation to defend the country ( pospolite ruszenie ), thereby becoming the kingdom's most privileged social class. Source: Internet