Back in 2008, the Marvel Cinematic Universe was launched with Iron Man. Captain America: The First Avenger hit the big screen three years later in 2011. While these heroes became part of the foundation for Marvel's The Avengers, they now find themselves battling one another in the first Phase Three adventure Captain America: Civil War, hitting theaters May 6. Today Marvel Entertainment has released a new TV spot, which showcases footage from these first movies, showing how Cap and Iron Man's relationship has evolved throughout the years.

This TV spot also features footage from last summer's Avengers: Age of Ultron, where Tony Stark (Robert Downey Jr.) tells Steve Rogers (Chris Evans) that he doesn't trust anyone who doesn't have a dark side, which served as a precursor of sorts to the conflict that will unfold in Captain America: Civil War. Unfortunately, we don't get too much new footage from Captain America: Civil War here, but there are two interesting shots. We see The Winter Soldier (Sebastian Stan) firing his weapon, while the next shows War Machine (Don Cheadle) being shot out of the sky. Does this mean Winter Soldier is responsible for taking down War Machine? We'll find out in less than one month.

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Marvel's Captain America: Civil War finds Steve Rogers leading the newly formed team of Avengers in their continued efforts to safeguard humanity. But after another incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability, headed by a governing body to oversee and direct the team. The new status quo fractures the Avengers, resulting in two camps, one led by Steve Rogers and his desire for the Avengers to remain free to defend humanity without government interference, and the other following Tony Stark's surprising decision to support government oversight and accountability.

Team Iron Man includes Tony Stark (Robert Downey Jr.), Black Widow (Scarlett Johansson), Vision (Paul Bettany), War Machine (Don Cheadle) and the new character T'challa (Chadwick Boseman), who will make his debut in this movie before starring in Black Panther, set for release on February 16, 2018. Team Cap includes Captain America (Chris Evans), The Falcon (Anthony Mackie), Scarlet Witch (Elizabeth Olsen), Hawkeye (Jeremy Renner), Ant-Man (Paul Rudd) and The Winter Soldier (Sebastian Stan). Marvel's Captain America: Civil War also stars Frank Grillo as Crossbones, William Hurt as Thaddeus Ross, Daniel Brühl as the villainous Baron Zemo and Tom Holland as Spider-Man.

Captain America: Civil War will kick off the Marvel Cinematic Universe's Phase Three, which will be followed by Doctor Strange (November 4, 2016), Guardians of the Galaxy Vol. 2 (May 5, 2017), Spider-Man (July 7, 2017), Thor: Ragnarok (November 3, 2017), Black Panther (February 16, 2018), Avengers: Infinity War Part I(May 4, 2018), Ant-Man and the Wasp (July 6, 2018), Captain Marvel(March 8, 2019), Avengers: Infinity War - Part II (May 3, 2019) and Inhumans (July 12, 2019). Take a look at the new TV spot below, and stay tuned for more on Captain America: Civil War.