A remarkably lucid and concise -- and best-selling -- popular history of the great war. Keegan, a well known British military historian, paints in visceral detail the major campaigns and battles of the war. Not neglecting the social and political background of the war, he describes the motivations and military triumphs and defeats of the Serbs, Austro-Hungarians, Germans, French, or British. Keegan has also published an excellent illustrated history (WAR16).  (WAR10, $16.95)