Kammala jumla mai zuwa: Daga 1942 Crüger ya sami damar buɗewa game da kasancewarsa memba na Jam'iyyar Kwaminis ta Jamus kuma a cikin 1943 ya ɗauki alhakin buga sigar Switzerland na mujallar Movement for a Free Germany ("Bewegung Freies Deutschland") da ke tallafawa Moscow. A cikin 1944 da 1945 ya kasance mai himma wajen gina goyon baya ga motsi na 'Yancin Jamus a sansanonin aiki na Switzerland, kuma ya rike mukamin Sakataren Switzerland don motsi har sai an rushe shi a ƙarshen 1945. A wannan lokacin
Yaƙin ya ƙare, a hukumance a watan Mayu na shekara ta 1945, ya bar kashi biyu bisa uku na yammacin Jamus ya kasu zuwa yankuna huɗu na sojoji. A watan Janairun 1946 Herbert Crüger ya koma Jamus, ya zauna ba a tsohon garinsa na Berlin ba, amma a yankin da Amurka ta mamaye, zuwa yamma. Tsakanin 1946 da 1948 ya yi aiki a matsayin babban jami'i ("Regierungsrat") tare da alhakin rufe kula da matasa a Ma'aikatar Kwadago da walwala a sabuwar jihar Hesse da aka sake kaddamar da ita. Matsayinsa ya zama abin ban mamaki bayan an gudanar da zaɓen yanki a watan Disamba na 1946 wanda Jam'iyyar Kwaminis ta yi mummunan aiki kuma bayan haka suka janye daga tsarin haɗin gwiwa tare da SPD na yanki wanda har zuwa wannan lokacin ya kasance. Ya kasance fiye da shekara guda kafin jam'iyyar ta umarci Crüger ya yi murabus daga mukaminsa na gwamnati, wanda ya yi a ranar 31 ga Janairu, 1948.