<iframe width="580" height="385" src="https://www.youtube.com/embed/LkIRtCacfSE?hl=en" frameborder="0" allowfullscreen></iframe> <br>The Allied invasion of Normandy on June 6, 1944 marked the largest seaborne invasion in military history. The operation came at a crucial moment during The ... <br><a href="https://www.youtube.com/watch?v=LkIRtCacfSE">source</a>