Death marches during the Holocaust

During the Holocaust, death marches were massive forced transfers of prisoners from one Nazi camp to other locations, which involved walking long distances resulting in numerous deaths of weakened people. Most death marches took place toward the end of World War II, mostly after the summer/autumn of 1944. Hundreds of thousands of prisoners, mostly Jews, from Nazi camps near the Eastern Front were moved to camps inside Germany away from the Allied forces.

Source: Wikipedia