Poem in the Film Patton

I rewatched movie Patton today, and in it, George C. Scott recites a poem by Patton. In doing a google search, I come up with sites that reprint the poem (or at least the part of it Scott recites in the film), but none of the sites I can find list the title of the poem. They also disagree slightly on the wording and all of them seem to use the film as the source of the quote. Now, I’m certain that Patton did write such a poem, but I’d like to know the correct wording of it and what the title of it was if it had one.

It has been a while since I have watched the movie, but was the poem “Through a Glass Darkly”?

“YOU MAGNIFICENT BASTARD, I READ YOUR POEM!!!”

Bingo! Only Scott in the film doesn’t recite the whole thing, just a few lines.