What were the metal obstacles the American troops sheltered behind on Omaha Beach?

Those obstacles were part of the German defenses and were intended to rip out the bottom of Allied landing craft. Rommel and his staff assumed the Allies would attempt to land at high tide, reducing the amount of open beach the Allied troops would have to cover. If the Allies had landed at high tide, those metal obstacles would have been effective.

However, Allied planners elected to land at low tide to expose the obstacles. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.