17 days signalled the start of the campaign which ended World War II in Allies . Many myths have subsequently developed about the events in Normandy , says historian . This is why the Germans took so long to be defeated in Normandy and , subsequently , despite a lack of training , they were still a very dangerous and deadly enemy with plenty of powerful weapons and a fierce determination to keep fighting . Sherman says The Royal Navy was not just an American venture . He also argues that American soldiers were not better trained than the Allies .
17 days signalled the start of the campaign which ended World War II in Allies . Many myths have subsequently developed about the events in Normandy , says historian . Sherman says The Royal Navy was not just an American venture . He also argues that American soldiers were not better trained than the Allies .