What could have gone wrong on D-Day at Normandy

It was a terrifying maelstrom of chaos and death. All the careful planning, specially designed vehicles, and months of training couldn't save the thousands of men who lost their lives that morning. Planes dropped 13,000 bombs before the landing: they completely missed their targets; intense naval bombardment still failed to destroy German emplacements. The result was, Omaha Beach became a horrific killing zone, with the wounded left to drown in the rising tide.

The weather could have cuased the atack to be cancled.

Explanation:

In the beginning it was actually almost cancleed, but General Eisenhower decided to atack despite the weather. If the had not atacked there most likley would have been more fights between both sides.

b, the anti immigrant fervor