"We, conquered by William, have liberated the Conqueror's land." So reads the memorial to the British war dead at Bayeaux, Normandy. Commemorating those who gave their lives to free France in 1944, it also serves to remind people of an earlier conflict. For the English, the Norman conquest remains deeply embedded in the national psyche. As the last contested military invasion to have succeeded in conquering this proud island nation, the date of 1066...