It was nessary because the soldiers before the US came in to world war 2 because of it army force and it motivated the allies to do better as they had one of the stongest armys
Flat feet
Myass
The top of the food chain.
Probably top 3.
They did'nt do it alone. On the Eastern front, the Soviets killed 80% of the Germans. But to answer your question, they landed on the Normandy coastline on Sword and Gold beach.
Us & uk.
George Smith Patton, Jr
Winston chirchill
gas maks or a hard hat
Field Marshall Bernard Law Montgomery - top general of the Brits in World War 2 European Theater.
He most certainly didn't instigate World War 2 and was a top US general in the European campaign.