"Stouthearted Men" Comes from one of Sigmund Romberg's silly operettas, "The New Moon". It involves, among other things, the French Revolution, Pirates, and a delightful song, "I Want to Be Like the Girl on the Prow", about the ship's figurehead. Traditionally, the chorus men form a V, with the female lead, Marianne, at the point like a figurehead.
I've never seen the movie, but I did see a stage production. My mother, whose name was Marianne, assured me that she loathed the song "Marianne We All Adore You" every bit as much as I detest "Jeannie With The Light Brown Hair", and Rod McKuen's "Jean". Two of the men in the chorus were obviously gay, which gave "Stout Hearted Men" a whole new meaning.