Death march

A death march is a forced march of prisoners of war or other captives or deportees with the intent to kill, brutalize, weaken and/or demoralize as many of the captives as possible along the way. It is distinguished in this way from simple prisoner transport via foot march. Death marches usually feature harsh physical labor and abuse, neglect of prisoner injury and illness, deliberate starvation and dehydration, humiliation and torture, and execution of those unable to keep up the marching pace. The march may end at a prisoner-of-war camp or internment camp, or it may continue until all the prisoners are dead (a form of "execution by labor", as seen in the Armenian genocide among other examples).

The signing of the Fourth Geneva Convention declared death marches a form of war crime.

We passed a slave woman shot or stabbed through the body and lying on the path. [Onlookers] said an Arab who passed early that morning had done it in anger at losing the price he had given for her, because she was unable to walk any longer.

During WWII, death marches of POWs occurred in both Nazi-Occupied Europe and the Japanese Empire. Death marches of Jews were common in the later stages of the Holocaust as the Allies closed in on concentration camps in occupied Europe.

...
Wikipedia