Simon Weston: My best teacher.

The article discusses the author's experience on his seven weeks of training as an army. He said that he will never forget one particular moment during their machine-gun drill, when Sergeant Maxey MacDonald hit him on the back of the head because he could not do it right. The ability of the machine gun directly affects the safety of fellow soldiers and he understood fully why he was whacked by his officer with the machine-gun, but he did not appreciate it at the time.