The D-Day invasion was planned for a long time and required extensive resources and manpower to put into action. If D-Day had failed, it would have meant heavy Allied loss of manpower, weaponry, and equipment.

Why was D-Day a failure?

On D-Day, the Americans came close to defeat on Omaha partially because the preliminary air and naval bombardment failed to knock out strong defence points, but also because they faced highly effective German troops who had gained hard-earned experience on the Eastern Front.

What were the odds of surviving D-Day?

As 2,000 paratroopers face 345,000 bullets, across an area of sky covering 9 squares miles, the chances of survival were 1 in 4. But 50% of the men survive.