He was a navy diver,Robert De Niro act’s as him in the movie Men of Honor he was Master Chief Petty Officer.Did he ever exist
There was a famous preacher named William Ashley Sunday. I don’t know why “Men of Honor” chose this name. I don’t think the movie is based uopn a real person.
Billy Sunday Navy
Master Chief Billy Sunday
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Billy Sunday WAS a real person. He held his Cross & Pony show in Winona Lake, IN
He is a made up character in a movie.
Has no bearing to real life.