Captain America's full name is Steve Rogers.He was formally a A poor orphan from the wrong side of the tracks in the days leading up to World War II, goodhearted Steve Rogers enlisted in the army to fight the Axis Powers, but met with rejection due to his small size and underdeveloped physique. Professor Abraham Erskine, a pioneer in the development of a Super-Soldier for the United States, saw potential in Rogers and whisked him into Project Rebirth, the professor’s bold experiment in enhancing the human body to its peak powers.
After going on a mission that froze him for multiple decades he was recruited by Nick Fury to join the Avengers.