 He was loyal to Piłsudski, even during the PPS split in the 1900s, when he remained with his Revolution Faction.Activist in the Komisja Tymczasowa Skonfederowanych Stronnictw Niepodległościowych (1912-1914).During the First World War, he was a member of several Polish organizations, including the Chief National Committee, and from 1917, a member of the Polish Military Organisation.