Back then, leaders had some perspective, as this archive BBC report shows:
King George VI broadcast a message last night warning of the "supreme test" the Allies faced and he called on the nation to pray for the liberation of Europe.
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President Franklin D Roosevelt told a news conference the invasion did not mean the war was over.
He said: "You don't just walk to Berlin, and the sooner this country realises that the better."The BBC has even more, including this neat animation.