Much has been written about Manfred von Richthofen's last flight and combat on the morning of April 21st 1918, and much controversy remains to this day. Both authors have travelled to the sight of Richthofen's final crash, studied the landscape and have discovered what many eye-witnesses of the time could see, and more importantly, what they could not have seen. During research for "Under the Guns of the Red Baron", a file of letters written by eye-witnesses to von Richthofen's crash, dated in the 1930s, was discovered. These letters were written many years before later reports became clouded in the mists of time. The final result is a detailed account of von Richthofen's last flight in which he persued a Sopwith Camel across the allied front line, and ended in a mortal wound from a single bullet.