In the middle of January 1945, the Soviet Army began an offensive in the direction of Cracow and Auschwitz. As the Nazis retreated hastily, they sent 58,000 prisoners, mostly Jews, out of the camp on "death marches" in the direction of concentration and labor camps in Germany. Most of the marchers were murdered en route; others were put to death before they left the camp. In the frantic retreat that had been forced on them, the Germans were unable to drive out the last of the prisoners and have them join the death marches. Nor did they have time to empty the warehouses of the victims’ looted belongings. When the Soviets entered Auschwitz on January 27, 1945, they found the storage facilities brimming with 7.7 tons of human hair, packed and ready for shipment, and many other items.