The allies unified strategy for winning the war was the commitment of the entire human and economic resources from all countries. Everyone had to be willing to give 100 percent.
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Since there had NEVER been a naval battle fought with aircraft carriers, if there were any victories...they were won by luck. Airmen from both sides had a devil of a time trying to find warships to attack; then they had a heck of time trying to sink them. Allied victory? It was a strategic allied victory in that the IJN aborted their mission. But it was a IJN tactical victory in that they sunk more allied warships; the USN fleet carrier USS Lexington, destroyer USS Sims, and the one oiler.
They were confident they could outlast the AlliEd forces
The US helped the allied forces (Soviet Union, United Kingdom, and France)
"Europe First" strategy
RADAR and many other new technologies helped to defeat the Japanese and Germans because they did not have as sophisticated equipment of the same items as the Allied Forces had. The Atomic Bomb technology caused the Allied Forces to win in the Pacific.
In World War I Australia fought with other countries but in World War II they were not part of the Allied Forces that conquered the Axis Forces.