 Nyora kupfuurira kweiyi ndima - Muna November 1944, Hahn akatumirwazve kubva kuWarsaw kuenda kuWestern Front. Akanga akagara muguta reCochem uye akagadzwa mutungamiri we Einsatzgruppe L iyo yakasungirirwa kuGermany Sixth Panzer Army panguva yeHondo yeBulge. Pashure pokukundikana kwechiito chokurwisa cheArdennesmuna Ndira 1945, Hahn akaendeswa kuArmy Group Vistula kuEastern Front kwaakashanda semumiriri we Sicherheitsdienst pavashandi ve SS-Obergruppenfuhrer Carl Oberg panguva yeVistula-Oder kurwisa. MunaFebruary 1945, akaendeswa kuDresden se Stabsführer mutungamiri wevashandi ku SS-Gruppenführer Ludolf von Alvensleben, Mukuru weSS nePurisa Mutungamiri weElbe. 