Shlomo was eliezer's father
The gypsy strikes Eliezer's father because he asked where the toilets were.
Eliezer's father dies at the Buchenwald concentration camp in Germany.
He didn't help and just watched as his father was beaten. And, he never responded to his fathers dying calls (his father kept saying 'Eliezer' and Eliezer never responded out of fear of being beaten).
Eliezer's father avoids being selected at Gleiwitz by lying about his age and saying he is younger than he is. This allows him to be placed in a group that is less likely to be chosen for work detail or further selection.
Eliezer gave his father marching lessons in the concentration camp to help him avoid being chosen for selection and to keep him moving to avoid being killed. It was a way to keep his father strong and motivated to survive the harsh conditions of the camp.
A gypsy Kapo.
He was unconscious.
eliezer sneaks over to the left side and slips his father back over to the right side while there was a lot of confusion.
Eliezer and his father lied to Dr. Mengele about Eliezer's age because Eliezer was afraid that being seen as too young would lead to him being selected for execution in the concentration camp. By lying about his age and saying he was older, he hoped to appear stronger and more capable of work, increasing his chances of survival.
During Eliezer's father's final illness in the book Night, there was a role reversal where Eliezer had to take care of his father instead of the other way around. Eliezer became more like a caretaker, providing his father with food, water, and encouragement, which was a stark contrast to their roles at the beginning of their time in the concentration camps.
Eliezer recited the Kaddish in spite of himself as a way to honor his father and as a form of rebellion against the dehumanization he was experiencing in the concentration camp. It was a way for him to hold onto his identity and spirituality amidst the horrors of the Holocaust.