I think the focus of US and British WW2 movies on their own accomplishments played a big role in this "distortion of history" (OTH if you've grown up on the other side of the Iron Curtain" there was no shortage of Soviet propaganda movies about WW2 either).
Personally I've come to the conclusion that the US/British invasion didn't turn the war around (it may have shortened it by a few weeks). But it most likely saved most of Western Europe from Soviet post-war-occupation.
(edit: AFAIK, what was an incredibly important contribution of (mainly) the US was the Lend-Lease-Act though to provide the Soviet Union with weapons and resources)
http://www.fallen.io/ww2/
I think the focus of US and British WW2 movies on their own accomplishments played a big role in this "distortion of history" (OTH if you've grown up on the other side of the Iron Curtain" there was no shortage of Soviet propaganda movies about WW2 either).
Personally I've come to the conclusion that the US/British invasion didn't turn the war around (it may have shortened it by a few weeks). But it most likely saved most of Western Europe from Soviet post-war-occupation.
(edit: AFAIK, what was an incredibly important contribution of (mainly) the US was the Lend-Lease-Act though to provide the Soviet Union with weapons and resources)