I tell you, my friends,’ he said one day. ‘I tell you that I am the only sane man in the regiment. It’s the others that are mad, but they don’t know it. They fight a war and they don’t know what for. Isn’t that crazy? How can one man kill another and not really know the reason why he does it, except that the other man wears a different colour uniform and speaks a different language? And it’s me they call mad!