What was ironic about the Sniper’s remorse after shooting his opponent on the other side of the street? Explain

He feels badly about killing his enemy. He regrets that he had to kill another skilled shooter, and feels guilty over it. This reveals that while he is a sniper,  he is a human with feelings and not a killing machine. He is doing his job for the war, but doesn't take pleasure in it.

in   ¨and yet the books¨   by czelaw miloz the tone is positive since it tells us that when we touch a book, it starts to live and the perspective is in the third person and turns once into the first person. in "the rhinoceros" by eugene ionesco the tone is illogical and absurd   and the perspective is in the third person since it is a play.