Director Joe Johnston had this to say about how many times Steve Rogers (Chris Evans) actually uses his shield in Captain America: The First Avenger.
"The whole thing about throwing the shield was given a lot of thought. And you know he just doesn't do it a lot in the movie. I'd say maybe four of five times? But when he does, it's a big deal; he really saves the day.He's not slinging it around all the time and using it randomly. He throws it when it's the right thing to do, and those are special moments. We opted to preserve those moment just to make them so special. He uses the shield a lot for protection, as you would expect, and as a weapon, like a battering ram; he slams it down almost like an ax of sorts, and he uses it as a pry bar. But when he throws it, those are the highlight-reel moments."
Captain America: The First Avenger was released July 22nd, 2011 and stars Chris Evans, Hayley Atwell, Sebastian Stan, Tommy Lee Jones, Hugo Weaving, Dominic Cooper, Richard Armitage, Stanley Tucci. The film is directed by Joe Johnston.