sentences:  As representative for Duisburg, Jarres was a member of the Prussian upper chamber — the "Herrenhaus" — from 1914-18.During World War I he was successful in securing food supplies for the city.During and after the Revolution he opposed the establishment of a far-left "Räteherrschaft" (rule by workers' and soldiers' councils), at the cost of being at times subject to physical violence.