What is the historical significance of D-Day?

D-Day, which occurred on June 6, 1944, marked the largest amphibious invasion in history, as Allied forces launched a coordinated assault on Nazi-occupied France at Normandy. This operation was pivotal in establishing a western front against Germany during World War II, ultimately contributing to the liberation of Western Europe from Nazi control. The success of D-Day bolstered Allied morale and signified a turning point in the war, leading to the eventual defeat of Nazi Germany in 1945. The event also underscored the importance of international cooperation among Allied nations in the fight against tyranny.