The Military Commission operated from mid January to the end of August 1917 as a part of the Interim State Council, which was later taken over by the Regency Council. Until 2 July, 1917, the Commission's official (actual head) was Joseph Pilsudski. This body was to be a nucleus for the future Ministry of Military Affairs. However, due to restrictions of German occupation authorities, the Military Commission's activity was mainly focused on preparatory and conceptual works which could rather be used in the future. During the first period (until July 1917), internal works were carried out in several departments: 1) for preparatory works, 2) current and statistics-registration affairs, 3) military education, 4) military language, 5) war industry, and 6) providing care of Polish servicemen's families. Moreover, works on Polish own military judicature were commenced, a draft law on military service was prepared, a statute of voluntary recruitment was worked out, and organization of associations supporting the Polish Army was prepared.