T'Challa had a much smaller role in the earlier drafts and did not even appear in costume, as the writers intended to put more focus on Spider-Man and save Black Panther's origin for his own movie. However, when it looked like Marvel would not be getting permission to use Spider-Man, Black Panther's role was beefed up significantly. By the time they did get to use Spider-Man, T'Challa had already become so integral to the plot that they decided to leave his role as it is and give Spider-Man a smaller part.
Tom Holland commented on how intimidated he was when he came to screentest for Spider-Man, saying that Robert Downey Jr. took him aside and said, "Listen, I remember my screentest for Iron Man. I remember how terrified I was. Just think of it as an audition. It's nothing too scary. If you get it wrong, we'll just start again. No pressure."
The day before filming a fight scene with Robert Downey Jr., Sebastian Stan sent him a video of himself doing intense bicep curls in front of the decapitated head of an Iron Man suit. He attached the message, "Looking forward to our scene tomorrow Robert".
(at around 1h 9 mins) Co-Director Joe Russo said that "The most powerful shot of the film" was Steve Rogers stopping a helicopter from taking off, with his bare hands. The shot was even featured in the first teaser trailer for the film. Russo said Chris Evans worked very hard in the gym to physically embody the character, because they wanted to test the limits of Steve's physical strength. About the shot itself, he noted, "On-set, we had Chris straining against a crane, holding the helicopter to get this fantastic shot of his muscles bulging, and you can feel the energy and determination as he tries to stop it."
(at around 1h 19 mins) Tony Stark (Robert Downey Jr.) remarks how attractive Aunt May (Marisa Tomei) is. Downey and Tomei actually had a relationship in the 1990s, and appeared in two other films together: Chaplin (1992) and Only You (1994).
Spider-Man was very nearly removed from the film, as Sony Pictures originally rejected Marvel's proposal to allow them a cut of the profit if they could pull Spider-Man over, but Sony Corporation expressed disappointment in the financial returns and the critical reception of The Amazing Spider-Man series and decided to negotiate a deal again.
Samuel L. Jackson was "surprised" to discover that Nick Fury would not be in the film after "the Russo Brothers told him he was." Executive Producer Nate Moore stated that Fury was not included "because he didn't add anything to the Civil War story they were telling."
Screenwriters Christopher Markus and Stephen McFeely's original idea for this movie was a vastly different and much smaller film without the other Avengers, but Producer Kevin Feige suggested they adapt Civil War instead. Certain parts of their original idea still made into the movie, such as the emphasis on Steve and Bucky's relationship, as well as the use of Baron Zemo as the villain.
Chadwick Boseman (T'Challa, a.k.a. Black Panther) underwent a vigorous training program to get in fighting shape for the character. While admittedly not a big reader of comics as a kid, Boseman read as many comics as possible for anything Black Panther-related. Boseman also recycled the Xhosa accent he learned for Message from the King (2016), for the character.
Robert Downey Jr. acted as the younger Tony Stark along with John Slattery and Hope Davis. Lola FX provided the "de-aging" visual effects on the face and hair of Downey with footage and photos of his early career as references.
Robert Downey Jr. and Chris Evans described the dynamic between Tony Stark, a.k.a. Iron Man, and Steve Rogers, a.k.a. Captain America, as a marriage, saying, "We love each other, but it's explosive. You're working toward the same goal, but you have very different approaches to it. It's blurry, and that's what makes it great. No one's right, no one's wrong. It's going to make it even harder for them to come to an agreement."
(at around 1h 9 mins) Chris Evans injured his arm muscles while filming the iconic shot of Captain America holding back a helicopter with his hands. Evans said, "That shot is a little bit of bicep porn. 'Zoom in on the biceps' - that's what the script said. Kevin Feige didn't airbrush my biceps, that's me. It's not a utilitarian shot, it's a shot where you're trying to look heroic. That position (of holding the helicopter with one hand and the ledge with another) is actually a very unnatural position to use to stop something but we used it because I have to flex my bicep, you are trying to make the scene look great. And I genuinely messed my arm doing that shot because of the strain." Robert Downey Jr. joked that the film-makers didn't mind that Evans hurt himself because of how great the shot turned out and they have been using it to promote the film ever since. Anthony Russo revealed that the iconic shot almost did not happen because on the day of the film-making there was a miscommunication with the costume department and Evans came in wearing a thick jacket. They immediately sent him back to change because then they wouldn't have been able to film the shot of his muscles bulging as intended in the script.
The filmmakers describe Bucky Barnes as a divided character, saying, "He's not Bucky Barnes anymore, he's not the Winter Soldier anymore. He's something in-between. There's a part of his personality that was under mind control, and he murdered a lot of people. So he has a very complicated history. Who is that person? How does that character move forward?"
Marvel initially wanted to hire Robert Downey Jr. to reprise Tony Stark as a small role, with just three weeks of work. However, Downey wanted a larger role, which would lead to a bigger payday. Marvel Entertainment CEO Ike Perlmutter was furious over the request, prompting him to order the screenwriters to write Tony Stark out of the script completely. When the deal seemed like it was off the table, Marvel Studios President Kevin Feige pushed to hire Downey, citing that his casting in the film could leave the door open for sequels, new franchises, and dramatic possibilities within the Marvel Cinematic Universe, as Civil War could drive future storylines for these films. As a result with Downey's casting, the actor received a substantial payout that included a back-end participation deal, and another payout if the film's box-office gross succeeded Captain America: The Winter Soldier (2014), which it did.
The film was going to feature the Incredible Hulk, but he was shifted to Thor: Ragnarok (2017), and so the filmmakers chose General Thaddeus E. "Thunderbolt" Ross (William Hurt) in the film, as a substitute to illustrate the theme of destructive power: "We thought it would be interesting to use a character who had a fanatical anti-superhero point of view, built on experience. He's cornering the Avengers politically now, he's out-maneuvering them."
(at around 1h 55 mins) When Steve and Bucky remember going on a double date in Brooklyn when they were younger, the Captain mentions Bucky's date was a redhead named Dolores, with the nickname "Dot". That description fits with one of Peggy Carter's nemeses from Agent Carter (2015), Dottie Underwood, also exploited as a weapon by the Soviets.
Hope van Dyne was going to become The Wasp in an earlier draft of the script, but she was removed, due to concerns that reducing her role to a cameo alongside the other characters would be a disservice to her as a character. The fact that Evangeline Lilly was pregnant at the time also probably influenced the decision. Kevin Feige has asserted that she will officially take on the Wasp mantle in a substantial role at a later point in Phase 3, which was later revealed to be in a new project titled Ant-Man and the Wasp (2018).
Costume Designer Judianna Makovsky revealed that for all of Chris Evans's scenes, where he is in regular outfits (outside the suit), they purposefully make him wear t-shirts, which are many sizes smaller than his actual size, so that his muscles pop on camera. Evans said all his t-shirt scenes are scheduled at the start of the filming, because he loses a lot of weight over the months it takes to film a Marvel movie. He said, especially, that filming the action scenes wearing the Captain America suit, makes him lose a lot of his size.
Tom Hiddleston confessed that even though he did not appear in the film, it contained one of his favorite moments in the Marvel Cinematic Universe, the helicopter scene. He enthused, "I mean Chris Evans does a bicep curl, with a helicopter! If you don't love that, we can't be friends."
During the airport fight scene a truck has the Bluth family logo. It is the same "stair car" (portable staircase for an airplane) that was the subject of many running jokes in the sitcom Arrested Development (2003). The Russo Brothers, the directors of this movie, also directed the pilot, and many other episodes of, Arrested Development (2003).
Tom Holland made audition tapes together with Jon Bernthal while filming Pilgrimage (2017), with Holland landing the role of Peter Parker, a.k.a. Spider-Man, and Bernthal the role of Frank Castle, a.k.a. The Punisher, in Daredevil (2015).
Spider-Man's suit design is based on his original look in the comics when he debuted in 1962. The goggles change size to reflect Spider-Man's expressive eyes in the comics, and also allow him to hone his senses and focus.
In the Civil War comic book series, Tony Stark builds Spider-Man an "Iron Spider" suit. It's red and gold, and laden with armor and gadgets. In this film, Spider-Man receives a suit in his normal red and blue cloth attire, but it does have gadgets.
Chris Evans refuted claims that his biceps were CGI enhanced for the film's famous helicopter shot. He instead prepped a lot in lieu of artificial enhancement saying, "That was really my arm, and you know what, I took a page of Anthony Mackie's book. When we were doing Avengers: Age of Ultron (2015), for certain scenes, I worked out just before the take, but there were a bunch of scenes where I was the only one out of the cast doing it, and I'd be embarrassed, and feel shame. So I didn't do it that often, and then we started Civil War, and Mackie has no shame. Before each take, Mackie's just curling weights non-stop and I thought, 'Yeah! What are you doing Chris? Just curl some weights! Who cares? I am not going to worry about twenty people judging me, as opposed to two hundred million people seeing the scene forever.' So before the helicopter scene, I lifted a lot of weights to get pumped. It's not like I woke up and I looked like that, that was me lifting weight for hours on end prior to filming that scene. There certainly was a lot of pressure. I was fully aware of what they wanted that shot to be. I wanted that shot to be great too."
According to Lola VFX, the visual effects studio who have worked on all three Captain America movies, in order to create the "young Tony Stark" illusion: "Every feature of the face and body needed to be addressed in some fashion. One thing that happens to all of us is that the skin of the face gradually lowers in certain areas, and needs to be 'lifted' back to where it was at the age in question. But other changes are incredibly subtle, such as increase in the way light reflects off the sheen of the skin, a reduction in the appearance of tiny blood vessels under the surface of some parts of the face, or more blood flow in the cheeks giving them that familiar youthful 'glow'. The shot was nearly four thousand frames long, with Tony Stark turning from one side to the other multiple times, physically interacting with other actors, and the set itself, and moving closer to the camera for a very long, uninterrupted close-up."
After the "Civil War" crossover event in Marvel comics was complete, another big crossover event was "Secret Invasion", which revealed that the shape-shifting alien villains, The Skrulls, had been replacing key people in government and the super powered community for decades, and that they are at least partially to blame for leading to the events of the civil war as a means to soften human society for a full-scale invasion. Since the Skrulls are villains of the Fantastic Four, it had been assumed that Disney and Marvel could not use them in future films, but it was later discovered with the announcement of Captain Marvel (2019), that Skrulls can be used by Marvel Studios, as long as they don't include specific ones owned by Fox. However, the idea of a "secret invasion" in the Marvel Cinematic Universe is already very close to what happened when HYDRA revealed they grew inside S.H.I.E.L.D.
In all three Captain America films, Bucky falling into a body of water represents a major change to the character. In Winter Soldier, falling into the Potomac marks the beginning of his recovery. In Civil War, falling into the river in Germany makes him realize the brainwashing still affects him. He also falls into a river during his death scene in the first movie, which marks his transformation into an assassin, but this is not revealed until the second film.
(at around 1h 24 mins) Wanda (Scarlet Witch) can disable the Vision, because she received her powers from the mind stone. One of Vision's powers, is to manipulate his body density, so he can become phantasmal, or stronger than diamonds. She made him so dense, that he became too heavy to move, and fell through the floor.
(at around 1h 45 mins) When F.R.I.D.A.Y. shows Tony Stark the photos of Zemo, he asks if she's run facial recognition, to which she replies "What do I look like?" He said, "I don't know. I've been picturing a redhead." Kerry Condon, who voices F.R.I.D.A.Y., is a redhead.
Costume Designer Judianna Makovsky said her favorite character to design, was Paul Bettany's Vision. She said she dressed him very stylishly, with elegant cashmere sweaters and cardigans, and gave him one of the "dandiest accessories", an ascot. She said that even though it might not be visible in the movie, he's wearing an ascot in most of his civilian scenes.
(at around 1h 27 mins) On The Late Late Show with James Corden (2015), Paul Rudd admitted that much of Ant-Man's star struck reactions to meeting Captain America and his allies, were greatly based on his own real first reactions upon meeting those cast members. He even owned up to the inappropriate "arm fondling" bit, though it was in fact Sebastian Stan's mechanical arm he was so interested in, rather than Captain America's, as depicted in the film.
Martin Freeman described Everett Ross as someone who "Works for the American government, and works in conjunction with the superheroes, and certain agencies that help to tame the superheroes' power." In terms of whether Ross would side with Stark or Rogers in the film, Freeman said that Ross is "ambiguous" and "You don't know whether he's good or bad", so "You're not quite sure which side he's on. It looks a little bit like he's playing one game, when actually he's playing another."
(at around 1h 30 mins) Tony Stark warns Captain America's side that if they don't surrender to Stark, some "J.S.O.C." guys will come after them instead. This is a reference to the U.S. Military's Joint Special Operations Command. J.S.O.C. oversees elite units like the U.S. Navy's S.E.A.L. Team Six, the U.S. Air Force's 24th Special Tactics Squadron, and the U.S. Army's Delta Force and 75th Ranger Regiment.
Thaddeus E. "Thunderbolt" Ross' first appearance in the Marvel Cinematic Universe, since his debut in The Incredible Hulk (2008). To date, that is the longest gap between a character's appearances in the Marvel Cinematic Universe (eight years). Despite the long absence, William Hurt reprised the role, though Ross is now Secretary of State, as opposed to a General in The Incredible Hulk (2008). This also makes William Hurt the first actor from The Incredible Hulk (2008) to return in a later Marvel Cinematic Universe film, aside from Robert Downey Jr. and Stan Lee, who both had cameos in The Incredible Hulk (2008).
John Slattery, who played Howard Stark, is only two years older than Robert Downey Jr., who plays Tony Stark, Howard's son. But, since his final scene is set twenty-five years earlier (in 1991), that makes Howard twenty-seven years older than Tony.
(at around 57 mins) In the film, when Bucky, Captain America, Falcon, and Black Panther are first captured Bucky is placed in a cell marked D23. D23 is the official fan club for The Walt Disney Company and the fourth D23 Expo was held on August 14-16, 2015 at the Anaheim Convention Center in Anaheim, California, where the first footage from the film was screened.
(at around 1h 7 mins) While fighting the Winter Soldier, Black Widow tells him, "You could at least recognize me." This may be a reference to a storyline in the comics, involving the link between the Winter Soldier and the Black Widow programs that enhanced them both with biotech. It may also be a reference to their comic-romantic involvement, or it refers to the Marvel Cinematic Universe story she told in Captain America: The Winter Soldier (2014), of being shot by him while on a mission, and various scenes in The Winter Soldier, when he was trying to kill her.
Mutants (such as the X-Men) play a part in the original comic book story, as human society had always held a prejudice against mutant-kind, while also being accepting of non-mutant heroes. When the tide turns against all powered people, some characters view it as fitting, since non-mutant heroes had it easy for so long, and others view it as troubling. Since 20th Century Fox owns the rights to the Marvel concept of "mutants", this wasn't a part of the film.
(at around 43 mins) When Bucky Barnes, a.k.a. Winter Soldier, is in Bucharest, Romania, he is shown to be buying plums at a fruit market. Plums are actually beneficial in treating those with Alzheimer's disease (a form of dementia characterized by memory loss), which therefore is suitable for Bucky, because he has been brainwashed, and is trying to remember his life before the Winter Soldier.
Although Spider-Man's suit was composed of CGI for every scene, a physical prototype Spider-Man suit was built during production, that Tom Holland wore on-set during some filming. It wasn't until later, that the filmmakers decided to scrap the suit altogether, and replace it with a CGI version. The prototype suit differed from the final product on-screen, as it featured raised webbing, and a classic spider symbol, which was very reminiscent of the symbol shown in the very first Spider-Man comic, released in 1962.
The working title that was used to create the film was "Sputnik". In the comics, "Sputnik" used to trigger the Winter Soldier's mind control, much like the sequence, "Longing, Rusted, Furnace, Daybreak, Seventeen, Benign, Nine, Homecoming, One, Freight Car", for his cinematic counterpart.
One of the major surprises to comic book fans, was that Captain America would refuse to be on the government's side, as he has been working for the U.S. Army and S.H.I.E.L.D. since World War II. His hero name reflects his real military rank.
The words "Homecoming" and "Seventeen", in Winter Soldier's HYDRA command, reference the title and date of release of the next Spider-Man film, Spider-Man: Homecoming (2017). Both of these words are only mentioned in the theatrical version of the film.
(at around 1h 35 mins) Ant-Man says the phrase "I'm your conscience, we haven't spoken for a while." The same phrase was used by Marlin in Finding Nemo (2003). These lines are both references to Pinocchio (1940), to which Ultron also refers, in Avengers: Age of Ultron (2015), by quoting "I've Got No Strings".
This is the fourth film in the Marvel Cinematic Universe to feature a pre-Marvel Studios logo "cold open" scene. The first was Iron Man Three (2013), the second was Guardians of the Galaxy (2014), and the third was Ant-Man (2015).
(at around 1h 20 mins) During his meeting with Tony Stark, Peter Parker tells him that he's only had his powers as Spider-Man for six months, clarifying the character's lack of involvement in previous Marvel Cinematic Universe films.
Alfre Woodard plays Miriam, the mother of a young man who was killed during the events in Avengers: Age of Ultron (2015) in Sokovia. In the Civil War comic book, Miriam's son (named Damian, who was in grade school in the comics) was killed when a battle that reached his school between the super hero team New Warriors and some bad guys, (including Nitro, whose powers include him being able to explode and reconstitute himself afterward) destroyed a nearby school bus, causing a large gas explosion that destroyed the school, which caused hundreds of deaths, and was the impetus for the Superhero Registration Act.
This was the first theatrically released film, featuring Spider-Man, where the visual effects for the character are not being produced by another company affiliated with Sony, the rights holder to Spider-Man. Industrial Light & Magic, which handles much of the special effects for the Marvel Cinematic Universe, produced the visual effects.
Bucky's code name "Winter Soldier" could have multiple sources of meaning. Winter could represent his maintenance, as he is kept on ice whenever he's inactive. It could represent that he is a relic from The Cold War, or that his humanity was stripped, to make him the coldest of assassins.
(at around 1h 29 mins) In the scene at the airport, when Iron Man calls upon Spiderman to reveal himself and snag Captain America's shield, he does so shouting "Underoos!" Underoos are a line of children's underwear first released in 1977, that feature superheroes on them. One of the more popular set of Underoos features Spiderman.
(at around 13 mins) During the virtual reality scene at M.I.T., Maria Stark plays the piano and sings the song "Try To Remember", from the 1960 musical The Fantasticks. This song's lyrics link nostalgia for the month of September, with the singer's lost youth: "Try to remember the kind of September / When life was slow and oh, so mellow / Try to remember the kind of September / When grass was green and grain was yellow / Try to remember the kind of September / When you were a young and callow fellow..." After Maria finishes singing, and the virtual reality presentation is done, Tony announces to the M.I.T. students, that he has given them grants for all of their research projects under the auspices of his new foundation, the "September Foundation".
This is the first movie in the Marvel Cinematic Universe, where Tony Stark uses only one Iron Man suit. In Iron Man (2008), Tony uses the Mark 1 to escape the cave, the Mark 2 to experiment with the tech, and the Mark 3 to attack the Ten Rings, and his final battle with Stane. In Iron Man 2 (2010), Tony uses the Mark 4 at the beginning, the Mark 5 during his fight with Vanko at the Grand Prix, and the Mark 6 in the final battle. In The Avengers (2012), Tony uses the Mark 6 for most of the film, and then utilizes the Mark 7 for the battle of New York City. In Iron Man Three (2013), Tony uses the Mark 42, the silver centurion armor, the Mark 40 and the "Heartbreaker" armor in his battle with Killian. In Avengers: Age of Ultron (2015), Tony utilizes the Mark 43 in the opening scene, and in his initial battle with Ultron. Then Tony uses the Mark 44 (Hulkbuster) armor against the Hulk in South Africa. Finally, Tony uses the Mark 45 in the battle of Sokovia. In this movie, Tony only uses the Mark 46.
In Spain, the film was titled "Capitán América: Civil War". The decision for not translating the subtitle "Civil War" as "Guerra Civil" was an attempt to avoid links or comparisons with the Spanish Civil War (plainly named in the country as "Guerra Civil"), which was fought between July 17, 1936 and April 1, 1939.
Earlier drafts of a third Captain America film, had Brock Rumlow, a.k.a. Crossbones, secretly working as a mercenary for the Red Skull (just like in the comics), but these ideas were scrapped and re-worked, when the filmmakers decided to follow the "Civil War" storyline.
The Raft, in the comics, is a facility in New York City, which is part of Ryker's Island Penitentiary, that is designed to hold captured supervillains, which is run by S.H.I.E.L.D. In the film, it is located somewhere in the Atlantic Ocean, and run by the U.S. Military instead, as S.H.I.E.L.D. has been disbanded. Notably, the first storyline of the New Avengers series, which started not long before the Civil War crossover event began, involving the prison riot, was actually the Raft's first appearance in the comics. While the Raft was not used in the original Civil War comic book storyline to hold the captured superheroes, it was mentioned though.
(at around 1h 35 mins) During the airport battle, Spider-Man shouts "Holy shit!" as Scott Lang transforms into Giant Man. This marks the very first time Spider-Man has ever mentioned a swear word onscreen.
The first film to be shot with the Alexa IMAX camera, featuring fifteen minutes of footage. The Alexa IMAX camera was a collaborative development between Arri and IMAX, in customizing the Alexa 65 6.5k camera to facilitate viewings in IMAX theatres, without overhauling equipment.
Helmut Zemo in this film cannot be the same Baron Zemo as the comics, because of age. Therefore, the touching story about his father, is more likely to be the Zemo who was an infamous Nazi, although probably his grandfather would be old enough.
(at around 1h 40 mins) Spider-Man mentions Star Wars: Episode V - The Empire Strikes Back (1980) during the fight with Giant-Man. This is a very appropriate quote, as Marvel now has regained the rights to create Star Wars comic books (and has been doing so again since January 2015).
(at around 1h 50 mins) When Robert Downey Jr. visits the imprisoned Avengers after their showdown, Jeremy Renner sarcastically introduces him as "the Futurist", which is actually the name of Downey's debut solo album, released in 2004, through Sony Classical.
Every phase of the Marvel Cinematic Universe starts with a film that features Tony Stark as at least one of the main characters. Phase One started with Iron Man (2008), Phase Two started with Iron Man Three (2013), and Phase Three started with this movie.
Zemo is the first primary antagonist of the Marvel Cinematic Universe films to not be an enhanced supervillain. However, the first one ever, in the Marvel Cinematic Universe, was Wilson Fisk, a.k.a. Kingpin, on Netflix's Daredevil (2015).
(at around 1h 16 mins) When the film introduces Peter Parker in Queens, the introduction shot is behind him, showing the character casually holding a DVD player against the side of his body. In The Amazing Spider-Man (2012), one of first few introductory shots of Peter Parker (Andrew Garfield), has the character holding a skateboard in a similar manner, with an almost identical frame composition.
Hope Davis who plays Maria Stark, is only one year older than Robert Downey Jr. who plays Tony Stark, Maria's son. But, since her final scene is set twenty-five years earlier (in 1991), that makes Maria twenty-six years older than Tony. Hope Davis and Robert Downey Jr. co-starred in Charlie Bartlett (2007).
Captain America: Civil War (2016) is considered to be Star Wars: Episode III - Revenge of the Sith (2005) of the Captain America trilogy (2011, 2014, 2016). A vengeful Zemo causes a rift between Captain America and Iron Man and tears The Avengers apart and has causes a rift between Captain America and Iron man and exposes the truth behind the death of Tony Stark's parents to manipulate and force Captain America and Iron Man to turn on and fight each other.
Alfre Woodard, who makes a cameo in the film as Miriam, the woman who blames The Avengers for her son's death, when The Avengers fought Ultron in the battle of Sokovia. Alfre had appeared in another science fiction film about cyborgs, Star Trek: First Contact (1996), as Lily Sloane.
Paul Rudd (Scott Lang, a.k.a. Ant-Man) uses his Pym Particle-powered suit to turn into Giant-Man for the first time on-screen. In Monsters vs. Aliens (2009), Rudd played the fiancé of the main character Ginormica (Susan Murphy), who also becomes a gigantic humanoid monster with amazing strength, after absorbing the radiation from a comet made of a rare element.
Alfre Woodard: (at around 17 mins) as Miriam Sharpe, the mother of an American citizen killed in the battle of Sokovia. Woodard was suggested for the role by Robert Downey Jr., before Marvel Studios learned of her casting as Mariah Dillard in Luke Cage (2016).
The film reveals that Bucky Barnes has been hiding out in Bucharest, which is the capital, and largest city of Romania. Sebastian Stan, who plays Bucky Barnes in the Marvel Cinematic Universe, is a Romanian-American actor, who was born in Constanta, Romania. In the first scene set in Bucharest, Bucky Barnes is buying fruits on a street market. Stan, who is fluent in Romanian, speaks perfect Romanian.
The filmmakers describe betrayal as a crucial theme in the film: "We didn't want the movie to be just about politics, and people arguing about platitudes. The final act is built around a personal act between Tony and Steve."
The appearance of Giant-Man was kept secretive throughout production and marketing, evident from the absence of said character in all trailers and television ads, but this movie's Funko Pop! figurines, and a Lego set, depicting the airport battle scene featured Giant-Man, was released and advertised before the movie's release date.
at around 33 mins) The speech which Sharon Carter makes at Peggy's funeral, is taken from a speech which Captain America makes in the comic Amazing Spider-Man #537 - "Doesn't matter what the press says. Doesn't matter what the politicians or the mobs say. Doesn't matter if the whole country decides that something wrong is something right. This nation was founded on one principle above all else: the requirement that we stand up for what we believe, no matter the odds or the consequences. When the mob and the press and the whole world tell you to move, your job is to plant yourself like a tree beside the river of truth, and tell the whole world - No, you move."
Robert Downey Jr.'s personal trainer Eric Oram stated that the trick to pitting Captain America against Iron Man "is to show Iron Man using the minimum force necessary to win the fight, and not to look like he's trying to go wild and kill somebody."
In the comics, while Spider-Man started off on Iron Man's side, he later shifted over to Captain America's side after learning that the Pro-Registration Side was imprisoning the captured unregistered heroes in a prison built in another dimension known as the "Negative Zone", against their will, without due process (as it is technically not on American soil) until they agreed to register. In the film, he fights on Iron Man's side, before being sent home by Iron Man after the battle at the airport in Germany.
at around 2h 10 mins) During the Battle of the HYDRA Siberian Facility, when Captain America is asked by Iron Man to stand down, he responds "I could do this all day". This is phrase is also said twice in Captain America: The First Avenger (2011), when Steve Rogers is beaten by a bully in an alley and later by Red Skull. Rogers is rescued or helped directly after the sentence is stated.
In the movie, Rhodes' spinal column is severely damaged as the result of an accident while he was in the War Machine suit. As a result, Rhodes uses bionic supports on his legs to move around during his recovery. This is a nod to an incident in the comics when Rhodes was badly injured, and had to receive cybernetic implants for his legs, arms, and part of his face making him part cyborg (similar to DC Comic's Cyborg, who is also a black superhero with cybernetic implants) which lasted until Marvel's Dark Reign event, where Rhodes received a new cloned body, into which his mind to be transferred.
at around 2h 10 mins) In the climax, before destroying the suit's arc reactor, Cap tears the Iron Man helmet from Tony's face. If he had not done this before the suit lost power, Stark likely would have suffocated, implying that Rogers was simply trying to end the fight rather than kill Tony.
In the comics, the second Giant-Man, Bill Foster, is one of the Anti-Registration heroes, who was killed by Thor's clone Ragnarok during the first battle between both sides. The concept of Scott Lang becoming Giant-Man to fight back against Iron Man's team (who was incapable of enlarging himself in the comics) as well as War Machine being injured as a result of Vision's attack (though it was accidental) are similar to this.
Spider-Man has two costumes in the film, his original makeshift one he's seen wearing in YouTube footage and which Tony Stark eventually finds in Peter's apartment, and his new costume, created with Tony's collaboration which more closely resembles the classic costume.
at around 33 mins) Part of Sharon Carter's eulogy for Peggy Carter, was written as part of the Marvel Civil War in the Spider-Man comics by J. Michael Straczynski, Writer and Creator of Babylon 5 (1994), and credited for the story for Thor (2011). The speech comes from an inspirational speech Captain America gives to Spider-Man during the Marvel Civil War, to explain why he continues to fight against the Superhuman Registration Act, when the country he represents are all for it. As a child, Captain America memorized a monologue that influenced his understanding of what it meant not only to be a patriot, but what it really meant to be an American. The whole philosophy stems from the writing of Mark Twain, on a monologue known as, "In a Republic, who is the Country?"
According to the commentary, Cap dropping the shield foreshadows the appearance of the Nomad costume, a short period in the 70s comics, where Cap continued to act as a hero without government sanction.
The reason for Thor and the Hulk's absence in the film, is Thor returned to Asgard out of concern for the dark vision that was given to him by Scarlet Witch, and The Hulk vanished. However, their absences in the film are resolved in Thor: Ragnarok (2017), which takes place during this film.
In Captain America: The Winter Soldier (2014), Captain America, Black Widow, and Falcon are arrested by HYDRA posing as S.H.I.E.L.D., which they escaped, having been freed by Maria Hill. In this movie, Captain America, Falcon, and Winter Soldier are also arrested by German Special Forces, and escape after Winter Soldier goes rogue, with help from Agent 13 Sharon Carter.
at around 1h 40 mins) When Redwing hits Iron Man in the head during the airport scene, a circle of "feathers", possibly shrapnel, can be seen, as a reference to when characters are hit in cartoons or comics.
Multiple references to different themes that aren't related to the Marvel Cinematic Universe are made throughout the film: While confined, Falcon tells Iron Man to bring Mark Fuhrman if he wants him to talk (Mark Fuhrman was a key part in the 1994-5 O.J. Simpson trial, having been thought to frame the football player because of his hatred towards black people), and during the final scene in Siberia, Iron Man calls Bucky Barnes "Manchurian Candidate", referring to the twice-filmed novel, in which American soldiers are thought to be brainwashed.
One of two films released in the same year which show the parents of a multi-billionaire superhero being murdered. In this movie, Tony Stark's parents are murdered in a flashback. Batman v Superman: Dawn of Justice (2016) had a scene where the parents of Bruce Wayne are murdered. Both Bruce Wayne and Tony Stark share a lot of common characteristics. Both are extremely intelligent superheroes with no superhuman powers other that their gadgets and suits. Tony Stark is the CEO of Stark Industries (founded by his father), whereas Bruce Wayne is the CEO of Wayne Corp (founded by his merchant ancestors).
There is an extra scene, in which Barnes decides to go back into suspended animation until something can be done about his conditioning, and Black Panther, who knows the truth about his father's assassination, and that Barnes is innocent, says that he and Barnes are victims of Zemo. This hints the possibilities of there being another Civil War movie, and that now Black Panther knows the truth about his father's death, it's most likely, he will take Captain America's side over Iron Man.
Stan Lee's second cameo playing a delivery man. In this film, he plays a FedEx driver delivering a package to Tony Stark. In Fantastic Four (2005), he played Willie Lumpkin, a USPS mailman who delivered Reed Richards' ("Mr. Fantastic") mail to him early in the movie.
Secretary of State Thaddeus E. "Thunderbolt" Ross (William Hurt) is the same General that hunted Bruce Banner, a.k.a. Hulk in The Incredible Hulk (2008) (played by Edward Norton). If you notice, his entire career was placed in the capture of Hulk, which ended in failure (as seen during a pre-credits scene of him drinking and meeting Stark in a bar, in mention of the Avengers Initiative). During this movie, nothing is mentioned of this encounter, nor the meeting between Stark and him at the end. What this means, is that the goverment had full knowledge of the Avengers involvement within all circumstances (outside of Thor, due to Asgard being out of reach).
In the narrative behind why Zemo wanted revenge on The Avengers: Zemo's family was killed in the battle of Sokovia, which he blamed The Avengers. Zemo decided to unleash vengeance on The Avengers by framing The Winter Soldier for the murder of T'chaka and find footage of Barnes assassinating Tony Stark's parents, and use it to force Captain America, The Winter Soldier, and Iron Man to fight and kill each other. With the Avengers divided and fighting each other, and with the truth of Stark's parents murder exposed. Zemo would had brought down The Avengers, and had his revenge.
This is the second film, featuring Don Cheadle, in which a "pinch" is used to set an electromagnetic pulse that interrupts the electrical grid. In Ocean's Eleven (2001) Cheadle's character, rogue explosives expert Basher Tarr, uses one stolen from a research lab to shut down Las Vegas' electrical grid while his partners in crime robbed three casinos. In this movie, the villain Zemo ships a pinch to unwitting workers at a substation. The workers unwittingly trigger the pinch, and Zemo, posing as a psychologist sent to examine Bucky Barnes after he was captured in Germany, uses the ensuing blackout to interact with Barnes unobserved, and trigger Barnes' Soviet "Winter Soldier" programming. Nothing good comes of it.
An "avenger" is a person who seeks revenge upon those who have wronged themselves or others. Iron Man and Black Panther both seek revenge upon The Winter Soldier. Winter Soldier is framed for the murder of Black Panther's father, and Winter Soldier assassinated Iron Man's parents at the order of HYDRA. Iron Man is a member of The Avengers.