Kammala jumla mai zuwa: Reuter ya fi shahara saboda matsayinsa a lokacin Yakin Cacar Baki a Berlin. A lokacin da Soviet ta sanya
Berlin Blockade (1948/49), an ci gaba da yammacin birnin ta hanyar jirgin sama na Berlin wanda Gwamnan Sojan Amurka, Lucius D. Clay ya kafa. A sakamakon barazanar, dole ne 'yan ƙasa a sassan yamma su haɗu. Ernst Reuter ya zama mai magana da yawun su kuma jagora, alama ce ta "Free" Berlin. Abin tunawa shine jawabin Reuter a gaban ginin Reichstag da aka ƙone a ranar 9 ga Satumba, 1948, yana fuskantar taron mutane 300,000 inda ya yi kira ga duniya kada ta watsar da Berlin. A zaben da aka gudanar a yammacin Berlin watanni biyu bayan haka, shahararsa ta ba SPD babbar nasara tare da kashi 64.5% da kowace jam'iyya ta samu a zaben 'yanci a Jamus. A matsayinsa na magajin gari ya kafa gwamnatin hadin gwiwa tare da manyan jam'iyyun biyu masu zuwa don nuna hadin kan Berlin ta Yamma. Roƙon Reuter ga Yammacin duniya ba a ji shi ba. Jirgin sama ya ceci garin daga yunwa, kuma Reuter ya zama ɗan siyasa na biyu na Jamus bayan yaƙin (bayan Konrad Adenauer) da za a sanya shi a bangon mujallar "Time". An kira shi "Herr Berlin".