It doesn't take a whole lot for Steve Rogers to flex. Anyone who's gone up against The First Avenger know he doesn't play. Some of Captain America's best moments, from The First Avenger to Endgame, helped not only the rest of the Avengers but inspired everyone in the theater.
Captain America's biggest flexes include the best quotes as well, including some scenes that are still living in our heads. Take a look and vote up the flexes from Captain America that remind you why he was The First Avenger.