Road to Infinity War - Phase 3 - Captain America: Civil War (2016)

Phase 3 kicked off in style with the stealth Avengers film Captain America: Civil War aka Avengers 2.5.
Admittedly there were a few worries going into the film that this was simply going to be an Avengers ensemble film rather than a Captain America film. The Russo brothers however managed to find a way to distil the story about the breakdown of the Avengers to actually further Steve Rogers' story by making the Jenga piece that threatens to topple the whole be James Sebastian Barnes aka The Winter Soldier.
Inspired by Mark Millar's game-changing comic series that crossed over many of Marvel's titles at the time, heavily influencing future storylines, it focused on the issue of a Superhero registration act that would force heroes to reveal their secret identities and become government employees.
As this was not an issue in the MCU due to the fact that most of the heroes were not hiding their identities, the storyline had to be adapted to fit in with the movie universe.
Following the events of Age of Ultron, the Avengers find themselves subjected to legislation called the Sokovia Accords. This would make them answerable to the United Nations, something that Tony agrees with but Steve refuses to sign. The battle lines are drawn between the Avengers as everyone has a different opinion on whether or not it is a good thing. Something which in particular affects Scarlet Witch and Vision's relationship which sets things up nicely for further exploration in Infinity War.
Just as the Accords are due to be passed, Bucky Barnes bombs the UN causing the death of Wakanda's King T'Chakka. This introduces audiences to the character of Black Panther in the form of his son Prince T'Challa (Chadwick Boseman). He desires revenge and goes after Barnes but Rogers sets out to protect his friend, unwilling to believe he was behind the bombing.
Upon his capture, which sees the reintroduction of Steve Rogers' beard... no, not the one in Infinity War, Sharon Carter of course, the Winter Soldier is released by a man called Zemo (Bruhl) using a HYDRA mind control technique.
In order to solve the mystery and bring his friend back, Captain America cuts ties with the Avengers, putting him on a collision course with Stark. Something that will cause all the heroes to pick a side and lead to the MCU's most iconic and fantastic scene: the Superhero Smackdown.
This was the scene that Marvel fans had dreamed of ever since Nick Fury turned up at the end of Iron Man. The chance to find out the answers to the geeky questions like "who would win in a fight? Falcon or War Machine? Ant-Man or Spider-Man?
Yes, just one of the reasons that Civil War is so good is that it is the film that brought Spider-Man into the MCU and boy does he make a great first impression. Tom Holland is perfect as the young teenage Peter Parker and he gets some wonderful moments, particularly with Cap, Falcon and Bucky.
Every character gets their moment to shine but it is Paul Rudd's Ant-Man who steals the show here with his transformation into Giant Man. When Ant-Man was first released I thought that he would transform when returning from the Quantum Realm and burst through the house but they wisely saved it for this and it was completely worth it.
It isn't just the fight at the airport but every action sequence that cemented the Russo brothers as the kings of the Marvel castle. Even going so far as to take a page out of the Marvel TV series playbook and include a fight in a corridor and stairwell.
Ultimately, the film comes down to Cap vs Iron Man as the scheme that Zemo has been plotting turns out to be a more twisted revenge tale than Oldboy as it is revealed that Barnes was the one responsible for killing Stark's parents. This results in the most emotional fight so far (even more so than Thor vs Loki) and one that puts the final nail in the coffin of the Avengers as Steve chooses Bucky over Tony "I'm sorry, Tony but he's my friend", "So was I".
Will we see the old team back together in Infinity War, only time will tell.

Fun fact: Hawkeye calls Tony "The Futurist" which is the name of the album that Robert Downey Jr released in 2004.

Infinity Stone counter = 4

Road to Infinity War - Phase 2 - Captain America: The Winter Soldier (2014)

For me, Captain America: The Winter Soldier is the MCU's The Dark Knight. This is the film that proved that Marvel can not only produce great comic book movies but a genuinely great movie that transcends the genre.
And all that from the two guys who directed You, Me & Dupree!
The film does a fantastic job of developing the character of Steve Rogers, who not only finds himself "out of time" but also at odds with the people who give him orders. Is he fighting for the good guys anymore?
It is an interesting storyline, particularly given the modern world in which we live where surveillance and data is such a huge issue, and Captain America is the perfect conduit in which to funnel the story through.
It is also the film that hinted that Kevin Feige was not a fan of the Marvel TV shows at that time and took a giant steaming dump on Agents of SHIELD, forcing them to change their entire direction, when it is revealed that HYDRA has been infiltrating SHIELD ever since the Second World War, giving rise to the incredible "Hail Hydra" memes whenever anyone was photographed hugging someone.

While the film was tearing down SHIELD, it was building bonds and relationships for Rogers with the introduction of Sam Wilson (Falcon), his right hand woman Black Widow (Evans and Johansson are terrific together in this) and the return of Bucky Barnes as the Winter Soldier.
It also gives the MCU its most heartbreaking moment to date when Steve is finally reunited with Peggy Carter after all these years only to discover that she has Alzheimer's and must relive the joy and pain of seeing him again for the first time over and over, and Atwell is magnificent in that scene.
What elevates Winter Soldier over other MCU films at this stage are the action sequences which are the finest in the saga. The choreography, cinematography and storytelling are exceptional AND they are predominantly achieved through practical effects which is probably a first for the MCU.
It is not just one set piece either. From the opening tanker rescue mission to the final fist fight between Steve and Bucky, there are a number of action sequences that would easily make the overall top ten including the elevator fight, Fury's car chase and the freeway shootout.
The Avengers might still have the "Wow" factor and more geek friendly moments, but Winter Soldier is Marvel working at the peak of its collective abilities and was the beginning of the passing of the torch from Whedon to the Russos as the go-to-guys for Marvel Studios and based on this first effort, as Cap would say "I'm with you till the end of the line".

Infinity Stone counter = 3 (Reality Stone, Space Stone, Mind Stone)