Why D-Day Was So Important to Allied Victory. The invasion of northern France in 1944 was the most significant victory of the Western Allies in the Second World War. ... The German Army suffered a catastrophe greater than that of Stalingrad, the defeat in North Africa or even the massive Soviet summer offensive of 1944.
Can you be more specific and add more context? This has happened plenty of times across human history.
They had to help rebuild the south enforce the ban of slavery.
