In "Where Have you Gone, Charming Billy?what is the most likely reason O'Brien uses repetition in the story? He is trying not to forget his experiences in the Vietnam War. He wants the reader to remember the main character's name.
He only repeats the most important words and phrases in the story he wants to make sure the reader can remember them later.
He wants to emphasize the automaticity and repetitive training that soldiers resort to in times of stress .

Which of the following sentences support your answer to question 1?
Songs , another trick to stop from thinking : Where have you gone , Billy Boy , Billy Boy , Oh , where have you gone , charming Billy ?"

Private First Class Paul Berlin walked carefully ."
They were quiet awhile . And the night was quiet , no crickets or birds , and it was hard to imagine it was truly a war ."
The idea of it made Private First Class Paul Berlin smile . He couldn't help it."