Good Luck, Mr. Yates

In this drama, set during WW II, a teacher at a military school is derided by his students because he has not joined the military. The man is deeply disturbed by their ridicule and disrespect and so pleads with the draft-board to reconsider his "essential" status and allow him to join. He is allowed to enlist, but still, because he has a punctured ear-drum, is not allowed to join. (allmovie.com)