Beginning D-Day what changed world war 2

https://www.history.com/topics/world-war-ii/d-day

https://en.wikipedia.org/wiki/Normandy_landings

https://www.army.mil/d-day/

https://www.army.mil/d-day/history.html

https://www.iwm.org.uk/history/the-10-things-you-need-to-know-about-d-day

https://www.dday.org/overview/

https://www.britannica.com/event/Normandy-Invasion

https://www.nationalww2museum.org/war/articles/d-day-allies-invade-europe