D-Day, June 6, 1944: the day on which the Allies landed on the beaches of Normandy with the intention of reclaiming mainland Europe from German occupation. The significance of the operation has captured the collective imagination to become the defining moment of World War II and represents the ending to the struggles of the early 20th century. This book follows the course of the war in Europe from 1939 through to the D-Day landings and their aftermath, taking in the most poignant events and looking at each through the numbers involved.