I think the beginning of the end was actually the battle of Midway, and beating the Germans at Stalingrad. That does not reduce the events of D Day
I agree.
Midway, El Alamein, Stalingrad, D-Day. All meant doom for the Axis.
Some people caught on earlier. Admiral Canaris (Hitler’s spy chief) knew the war was lost the day Hitler decided to invade the Soviet Union. So Canaris advised Spanish dictator Francisco Franco to stay neutral, and not join the Axis. Franco wisely took the advice.