Hollywood did a good job as usually. Actually 99% of what people know about the USA, they know from the US movies and that's a totally fake information which has nothing in common with the reality.
Every WWII movie shows the Omaha beach invasion like the greatest battle ever which fully destroyed Nazis. This is a standard picture from the US movies. In fact only 3,000 allied and 1,200 Germans were killed in that "epic battle". Great success, yeah
Now compare it for example with Kursk Battle: 1,129,619 Soviets and 1,500,000 Germans killed (don't even mention tanks, aircrafts, artillery etc).