Steven Grant "Steve" Rogers was a normal man until he volunteered for the Super Soldier U.S Military program, in World War II.
The birth of Captain America
HYDRA's attack in Stark's vault
Invasion in the Antartic HYDRA Base
Testing the Iron Patriot armor
HYDRA's attack in the S.H.I.E.L.D Helicarrier
Showdown with Taskmaster