LOTS OF 5 BOOKS ABOUT WORLD WAR I

Paul Fussell, The Great War and Modern Memory, Oxford Univercity Press, 2000
Liddel Hart's History of the First World War, Papermac, 1992
Clive Ponting, Thirteen Days Diplomacy and Disaster, The Countdown to the Great War, Pimlico, 2003
Correlli Barnett, The Great War Based on the Classic TV Series, BBC, 2003
John Terraine, The Great War, Wordsworth Edition, 1998