Although the defensive wall was never completed , the Wall 's existence has served to explain away concerns of the Soviet Union as to why the Second Front was not opened until June 6 , 1944 ( less than a year before the end of the war in Europe ) .
Although the defensive wall was never completed the Wall 's existence has served to explain away concerns of the Soviet Union for why the Second Front was not opened until June 6 , 1944 ( less than a year before the end of the war ) .