 Complete the following phrase:  In September 1943, he was appointed Chief of Staff of the 63rd Army, and from February 1944, he was at the disposal of the Main Personnel Directorate of the Peoples Commissariat of Defense and in June was appointed Chief of Staff of the 70th Army, which took part in the LublinBrest Offensive Operation, and in March 1945  for the post of Chief of Staff of the 19th Army, which took part in the 