In Avengers: Infinity War, Steve Rogers joined the fight wearing his worn-and-torn Captain America: Civil War costume, a symbol of the identity he lost at the end of his dispute with Tony Stark. Once the two heroes' battle was over, Steve dropped his iconic shield, and effectively walked away from the mantle of Captain America. But with the fourth Avengers film looming, Chris Evans' character will return to his role as Captain America in hopes of defeating Thanos and saving the universe. And it begins with the return of a fan-favorite costume.

After months of anticipation, Marvel released the teaser trailer for Avengers: Endgame this morning, giving fans a glimpse of what to expect from the blockbuster sequel. The first footage reveals a clean-shaven Steve Rogers still reeling from loss, and once more clad in the stealth suit he wore in Captain America: The Winter Soldier while leading a S.H.I.E.L.D. covert team.

Avengers Endgame Captain America Winter Soldier suit

This version is arguably one of the best costumes the First Avenger has worn on the screen, which should make this a welcome return for fans.

But what is the significance of this costume change? Given that Steve has ditched the beard and the old, tattered costume, it's likely he's ready to assume a leadership position again. If they have any hope of defeating Thanos, the Avengers  -- or, at least, what remains of them -- will have to be properly re-assembled, and that begins with Captain America.

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Without Tony Stark around for the time being, it's possible Cap has no new costume to wear, which means he has to fall back on an old favorite. Of course, we already know from promotional art that Captain American will have chain armor at some point, which means the stealth suit is only temporary.

What's more, this is also a nice callback by co-directors Joe and Anthony Russo to their first Marvel Cinematic Universe film, Captain America: The Winter Soldier.

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Avengers: Endgame will release on April 26, 2019. Directed by Joe and Anthony Russo, the film stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Samuel L. Jackson, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Tom Holland and Anthony Mackie.