The catastrophe -- The British carry on: Dunkirk through the Battle of Britain -- The Battle of the Atlantic I: 1939-1941 -- The Russian Campaign I: to Moscow -- The Mediterranean and the Middle East I: from the fall of France to December 1941 -- The hinge: American intervention -- The Battle of the Atlantic II: December 1941 to May 1943 -- The Russian Campaign II: to the Caucasus and Stalingrad -- The Mediterranean and the Middle East II: from Pearl Harbor to the invasion of Northwest Africa -- The Pacific: Pearl Harbor to Midway -- Conclusions.