English summary: This dissertation discusses an opera of the contemporary Austrian-American composer Dr. Nancy Van de Vate, a little known adaption of Erich Maria Remarque's novel "Im Westen nichts Neues" (published in English under the title "All Quiet on the Western Front"). The production which premiered in Osnabruck, Germany in September 2003 was well received by the national press. However, this opera which is undoubtedly an important...