Complex sentence: In October 1939, Starace was finally dismissed as party secretary in favor of the popular Ettore Muti and made Chief of Staff of the MVSN, a position he held until being dismissed for incompetence in 1941.
Split into simpler sentences: In October 1939, Starace was finally dismissed as party Secretary in favor of the popular Ettore Muti. He was made Chief of Staff of the MVSN and he held this position until being dismissed for incompetence in 1941.