Twelve Days in May by Brian Cull
For 12 days in May 1940 the Hurricane squadrons of the Royal Air Force faced the might of the German Air Force and carved a glorious chapter in the annals of aerial warfare. Using contemporary accounts, official records and personal interviews, from both sides, the authors have produced a detailed day-by-day study of the efforts of the outnumbered RAF fighters during the decisive initial stage of the Battle of France.