U.S. 11th Armored Division Liberates Mauthausen Concentration Camp

[American forces] disarm the remaining SS guards. Representatives from the International Committee of the Red Cross begin caring for surviving prisoners in the main camp. Incomplete camp records indicate that about 200,000 prisoners have passed through Mauthausen since its establishment in 1938. The death register at Mauthausen indicates that more than 68,000 people have died in the camp. Thousands of unregistered prisoners also died at Mauthausen. More than 8,000 weak and emaciated prisoners, too ill to recover, die shortly after the liberation of the camp.

During the final months before liberation, the camp's commander Franz Ziereis prepared for its defence against a possible Soviet offensive. Most of the inmates of German and Austrian nationality "volunteered" for the SS-Freiwillige Häftlingsdivision, an SS unit composed mostly of former concentration camp inmates and headed by Oskar Dirlewanger. The remaining prisoners were rushed to build a line of granite anti-tank obstacles to the east of Mauthausen. The inmates unable to cope with the hard labour and malnutrition were exterminated in large numbers to free space for newly-arrived evacuation transports from other camps, including most of the sub-camps of Mauthausen-Gusen located in eastern Austria. In the final months of the war, the main source of calories, that is the parcels of food sent through the International Red Cross, stopped and food rations became catastrophically low. The prisoners transferred to the "Hospital Sub-camp" received one piece of bread per 20 inmates and roughly half a litre of weed soup a day. This made some of the prisoners, previously engaged in various types of resistance activity, begin to prepare plans to defend the camp in case of an SS attempt to exterminate all the remaining inmates. It is not known why the prisoners of Gusen I and II were not exterminated en-masse, despite direct orders from Heinrich Himmler; Ziereis' plan assumed rushing all the prisoners into the tunnels of the underground factories of Kellerbau and blowing up the entrances. The plan was known to one of the Polish resistance organizations which started an ambitious plan of gathering tools necessary to dig air vents in the entrances.

On 28 April, under cover of a fictional air-raid alarm, some 22,000 prisoners of Gusen were rushed into the tunnels. However, after several hours in the tunnels all of the prisoners were allowed to return to the camp. Stanisław Dobosiewicz, the author of a monumental monograph of the Mauthausen-Gusen complex explains that one o...