It's just so hard to imagine how the troops felt. Beaches with all kinds of defences, mines, machine guns, artillery. The fields flooded to prevent parachutists landing.
And still the Allies came. Scattered over Normandy when they dropped. Often alone trying to find their friends.
Storming ashore. Many killed on the first wave. The famous quote was "Gentlemen, we are being killed on the beaches. Let us go inland and be killed." when demoralised troops on Omaha beach needed rallying.
I just can't imagine it. So many people died and were injured on the first day.
But it had to be done.