-via IMDB.com
Another controversial opinion here. I didn't care for this one. I don't know if it is superhero fatigue (which I'm feeling) or just that this one didn't hold together for me. CA:CW is the third Captain America film in the Marvel Cinematic Universe, a follow-up to both Captain America: The Winter Soldier and** The Avengers: Age of Ultron**.
Winter Soldier was a strong, thoughtful action film that played as much as a spy thriller as a superhero film. It followed Steve Rogers as he sought out to rescue his childhood friend, Bucky, who had become the Winter Soldier, a brainwashed super-soldier controlled by HYDRA, the earth-based badguys. I did keep wondering why he, Black Widow or Nick Fury just didn't call in Iron Man to help out. Or one of the other Avengers. Age of Ultron was an overstuffed, unsatisfying sequel to the first The Avengers flick that spent far too much time setting up Civil War and the eventual, upcoming Infinity Wars series.
Civil War suffers from this same problem. It is setting up several new superhero characters for their own films, bringing everyone together to fight each other and trying to, arguably, keep both sides as good guys. The plot circles around three things: the world's fear of the power of the Avengers and their tendency to break things, Rogers' ongoing attempts to save and rehabilitate the Winter Soldier and a plot by Count Bezo (?) to discredit all the Avengers and set up the Winter Soldier and something, something...
It becomes Tony Stark versus Steve Rogers with everyone picking sides except there's no Hulk and no Thor because they're too powerful I guess. Instead we get Antman, Black Panther and Spider-man joining the fun. It's all confusing and not very serious except it tries very hard to be serious and I was bored a lot of the time.
And annoyed because the characters were acting out of character. The Tony Stark of Iron Man 3 was not the Tony Stark of The Avengers: Age of Ultron and he was different again in this film. I was exasperated by it. Robert Downey Jr. seems to be playing a different character in each film and it seems it's because he's written differently in each film.
I admit, I am one of the few who enjoyed Iron Man 3, mostly because it explores his post traumatic stress from the events in The Avengers but then everything after that has been kind of meh. Antman is saved by is divergence into being more of a heist film but it didn't hold up great for me. Neither does Captain America: Civil War.