... on Captain America: The Winter Soldier:
Kevin Feige described the film as "a 1970s political thriller masquerading as a big superhero movie."
Unlike the other films in the Marvel Cinematic Universe, "The Winter Soldier" minimizes the use of visual effects as much as possible. Anthony Mackie, elaborated: "The Russos, what they did that was so great was, they wanted to stay with live action, which is a dying art form...If they could build it, they built it. If we could do it, we did it. They wanted to do as little CGI as possible. That's why the movie looks so great."
The scene where Captain America jumps out of a plane without bothering to use a parachute is a homage to a similar scene from the first issue of "The Ultimates" comic.
A deleted scene in The Avengers (2012), of Steve learning what happened to his commandos, and to Peggy Carter ended up being cut out from that film, but is included in this film.
Cap's new costume takes cues from the "Super-Soldier" outfit he wore when he served as Director of S.H.I.E.L.D. in the comics.
To prepare for the role of the Winter Solder, Sebastian Stan went through five months of physical training and historical research: "I dove into the whole Cold War history: I looked at the KGB. I looked at all kinds of spy movies, and all kinds of documentaries about that time, and what it was about. I grabbed anything from that time period and anything about brainwashing."
According to Chris Evans Steve Rogers continues his adjustment to the modern world, which began in The Avengers (2012): "It's not so much about his shock with technology... It's more about the societal differences. He's gone from the 1940s to today; he comes from a world where people were a little more trusting, the threats not as deep. Now, it's harder to tell who's right and wrong. Actions you take to protect people from threats could compromise liberties and privacy. That's tough for Steve to swallow."
In battling the Winter Soldier, Captain America needs all the resources he can get, including his iconic shield, which has a lot more uses in the film. The shield is traditionally used mostly as a defensive weapon, but in Captain America: The Winter Soldier the filmmakers wanted to explore using it more as an offensive weapon. There are two handles on the shield and Steve Rogers can hold onto the handles in order to utilize it in an eastern style of fighting.
Anthony Mackie was unhappy with the modern take on his costume as Falcon. He wanted the red spandex look from the comics.
In an attempt to prevent spoilers and keep secrecy, the working title of the project while filming was "Freezer Burn."
Shooting in Washington D.C. put Steve Rogers, Black Widow and Falcon in scenes at some of the most prominent national landmarks, including the Jefferson Memorial, Lincoln Memorial, National Air and Space Museum, Capitol Building, National Mall, Occidental Restaurant at The Willard Hotel, DuPont Circle Neighborhood and the Theodore Roosevelt Bridge, which the production shut down for the first time ever for the filming of a major motion picture.
Marks the forth time Chris Evans and Scarlett Johansson have worked together, both starring in The Perfect Score (2004), The Nanny Diaries (2007) and The Avengers (2012) prior to filming.
The filmmakers described the Winter Soldier as a "negative image of Captain America."
Robert Redford was cast in part as a homage to his roles in 1970s thrillers like Three Days of the Condor (1975). He wanted to do the film because his grandchildren are fans of Marvel films and he wanted them to see him in one.
Georges St-Pierre, who plays Batroc the Leaper, is the former UFC Welterweight Champion (2008-2013), having vacated his title in December 2013.
Anna Kendrick, Felicity Jones, Imogen Poots, Teresa Palmer, Alison Brie, Emilia Clarke, Mary Elizabeth Winstead, Elizabeth Olsen and Jessica Brown Findlay were considered to play Sharon Carter.
Reigning UFC welterweight champion Georges St-Pierre plays a French mercenary in the film. For the filmmakers, landing the popular MMA fighter for the role was a stroke of luck and good timing but is was equally a stroke of luck for Georges St-Pierre who was excited to get his first chance at being in a big action movie.