My father served in WW2 as a quartermaster officer, in Italy and in France, and got no medals for heroics. He explained the battle stars on his ETO campaign ribbon thusly: “Each star represents a fuel dump that got strafed out from under me.”
And he turned out to be a white collar guy in a town of 15K, where the schools were 18 or 20% Black and all the blacks lived in one part of town. And HIS father, who lived in the state capital, was racist to the bone to his dying day (ironically, as my recent research reveals him to have been 1/8 black himself.)
How Dad knew about Miller, I have no clue. But in 1958 or 59, when I talked to him about a student coalition quietly forming in my high school to push back against systemic school racism, one that included me, he told me all about Miller, as well as stories about other blacks he had served with.
Even so, there were no blacks in the local country club, nor even black caddies, and he played quite a bit of golf.