On April 5, 1945, as American 3rd Armored Division closed in on Mittelbau-Dora, Möser led a forced evacuation of over 3,000 prisoners to the railhead for transfer to Neuengamme. Due to the wartime situation the train was diverted to Ravensbrück concentration camp instead. The prisoners were then led on a death march for the last stage of their journey.[4]