History of the U.S. Army WWII Assault Training Centre in North Devon England. From formation of the Centre and creation of the American amphibious assault doctrine for Normandy. The book includes training details of the combat troops who would spearhead the D-Day landings on the beaches of Normandy. The ATC is an area overshadowed by the very event it made possible - D-Day 6th June 1944. A story never before told researched from archive documents maps and recollections of those who served and trained there.