During WW II, the brass didn’t depend on diversity to win the war - as they claim they need now to keep the U.S. military ready with its high tech equipment.
And they wonder why they can’t get white guys to sign up any longer.
During WWII, we were fighting alongside a murderous communist tyranny, against a different form of socialist tyranny. Victory for communism was essential. During the Cold War, we were fighting against murderous communist tyrannies, and the communists in our government increasingly sought to damage and degrade our military.