The many ways in which front-line soldiers in a war are able to stave off boredom has been the topic of many letters and memoirs throughout time, and the attached article will show you how one Frenchman in particular addressed the issue - it is a seldom seen black and white photograph depicting an acrobatic stunt being performed above the parapet and in plain view of German snipers.
More articles about W.W. I trench warfare can be read here.