Jean-Yves Mary brings new insight into the German campaign to breach the Ardennes, chronicling day by day, almost hour by hour, the advance of the German units against the Ninth and Second French Armies during the six days that would seal the fate of the nation. This first volume presents the operations from 8-15 May, 1940. More than 1,000 photographs, the majority published here for the first time, pay witness to the drama that unfolded during these tragic days.