 Complete the following phrase:  He was promoted to Komkor and replaced Komdiv N.M. Rogowski as the chief of the artillery of the Red Army, who was later shot during the Case of Trotskyist Anti-Soviet Military Organization, on 20 June 1937. Voronov started work on the modernization of the Red Army artillery, and in November 1937 submitted a memorandum to Kliment Voroshilov on the modernization of the artillery. At the end of July 1938 Voronov went as part of a special commission of the Peoples Commissariat of Defence to test the combat training of the Far Eastern Military District during the 