Unless you are a history scholar you have probably not heard of Exercise Tiger. It was a training exercise for D-Day and a series of SNAFU's left almost 1,000 young, mostly untrained, soldier's dead at the hands of the German's who had no idea what they had stumbled on.
This unfortunately did not come to light when it happened because of the secrecy surrounding the D-Day invasion, as you can imagine surprise for D-Day was of the utmost importance.
The book was both interesting and sad as it traced the events and causes of the massive and needless loss of young life. A book tat should be read by all who have an interest in WWII or the military in general.