Here is a tragedy -- a great film doomed by a terrible title.
I saw this movie as "Duck, You Sucker" in the theater in 1972 or '73. I still have images and haunting music burned in my brain from it. It has, for one thing, one of the biggest real explosions ever filmed, an absolutely awesome blast using real high explosives that makes today's fiery spectacles pale. I think the whole production company was stunned by it, certainly Sergio Leone was, because he gives it the full treatment: multiple cameras and angles, wide shots, lots of screen time giving us lots of looks. And it's worth it. If you're not a war veteran, you've never seen anything like this.
But this film is much more than its fx. It's a deep, moving story told on the grand scale, with Oscar-class cinematography. It is both a major outdoor adventure and a small, intimate story. It has some of the quirkiest scenes, blackest humor and darkest betrayals, too.
Don't look for it on TV, unless Turner Classic Movies shows it "uncut." It was horribly mutilated in editing for television, and therefore unpopular and rarely shown. Get the original theatrical version, and watch it undisturbed. A party atmosphere would ruin it for you.
It's on my top-20 all time list!
