Final answer:
Zalman, the young Polish man running beside Eliezer during the death marches, suffers a severe stomach cramp, falls, and is trampled as he is unable to get back up.
Step-by-step explanation:
During the death marches from Buna, as depicted in Elie Wiesel's memoir 'Night', a young Polish man named Zalman is running beside the protagonist, Eliezer.
Tragically, Zalman experiences a severe stomach cramp and can no longer keep up with the pace of the forced march. As a result, he falls to the ground and is unable to rise.
The implication is that Zalman is trampled by the other prisoners who are unable to stop due to the Nazi guards driving them forward.
This event highlights the desperate and brutal conditions prisoners faced during the evacuations from concentration camps like Buna, amidst the final stages of the Holocaust initiated by Nazi Germany.