D-Day 75th Anniversary: Dress Rehearsal Was a Disaster

5.   A D-DAY DRESS REHEARSAL WAS A FIASCO.

Two months before D-Day, Allied forces conducted a disastrous dress rehearsal of the Normandy invasion  on an evacuated  English beach called Slapton Sands.  Known as "Exercise Tiger,"  749  U.S. troops lost their lives after a fleet of German E-Boats caught wind of the mock invasion and torpedoed American tank landing ships.

Survivors described the "Exercise Tiger" fiasco as more terrifying than the D-Day landing on Omaha Beach.