What If the D-Day Invasion had Failed?

                                                    Watch interesting discussion below about the question from PJTV

Supreme Commander of the Allied Forces General Dwight D. Eisenhower planned to take full personal responsibility if the massive force landed at Normandy failed to establish a strong foothold. Eisenhower and Churchill agreed that in such a catastrophic failure the allied forces would be withdrawn rather than have them fight to the death. However, the invasion was a success despite the loss of 4900 lives that first day. By the end of that first
day over 150,000 troops were on shore and in full control of 80 square miles of the Normandy coast. The success opened the path to  the liberation of Europe and the German surrender less than a year later.

In a hastily scribbled note on the eve of the invasion Eisenhower wrote, in part; ",,,My decision to attack at this time and locale was based on the best information available; the troops, the air, and the navy did all that bravery and devotion to duty could do. If any blame or fault attaches to the attempt, it is mine alone."

Below is the image of Eisenhower's note:

                                          General Eisenhower speaking to Airborne Troopers before they board 
                                          planes and gliders that will drop them behind German lines during the 
                                          night of June 5/6.

                                      17 more D-Day photogaphs

Audio of Eisenhower's address to the troops on the eve of D-Day.