It is a story of a man (Private Quelch) who knew too much.
Private Quelch was a tall and stooping young man. He earned himself the nickname 'Professor' because of his knowledge and information about everything. He really knew too much. His mission was to get a commission in the army for which he worked very hard. He borrowed training manuals and read them late at night. He drilled with enthusiasm and remained miraculously tireless even after route matches. And day in and day out, the professor would lecture to his colleagues on every aspect of human knowledge. Technical definitions, the parts of the rifle, its use and care, he had them all by heart. The greatest fault of his character was that he could not resist the temptation of showing off his superior knowledge and correcting others in their work. Each time any of his colleagues made a mistake, then he would publicly correct him. His colleagues never wanted to stand near him. They got infuriated by his exhibitionism. Sometimes they even cut jokes on him.
Private Quelch, however, was unmindful of practical jokes cut on him by few soldiers. He was really thick - skinned. He became a stock of laughter for others but never paid attention to it. He remained busy all the time in exhibition of his knowledge and sometimes in correcting others. Such a man can never be worthy of praise. He was shown his place in last.
Corporal turnbull was a young man, but he was not a man to be trifled with. He could not tolerate nuisance. When the professor started taking liberties with him, he became angry. He decided to teach him a lesson. He snubbed him by asking him to fall in with others. He deliberately announced that the professor was nominated for permanent cookhouse duties. Thus, he got the treatment that he deserved.
It conveys an important message that one should be noble. Nobility is needed more than knowledge and talent in making a person lovable and respectable. If the professor had humility and care for others sentiments he would have earned great respect.