The landings began on June 6 1944 and they marked the beginning of the liberation of German-occupied Western Europe from Nazi control. In 1944 it was so obvious soviet unioun was winning at It was also clear they wouldnt share the lands they occupied. What You Need To Know About The D Day Beaches Imperial War Museums 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. . By the end of June more than 850000 US British and Canadian troops had. D-Days major effect on was to open a new front in the European war. So communism was then only introduced in Eastern Europe. The D-Day invasion was perhaps the most single important event of WWII because it put Allied troops in Europe and contrained German forces between France and Russia effectively leading to the end of the war. What was one effect of the d-day invasion. On...