In 1942, Steve Rogers was deemed physically unfit to enlist in the U.S. Army and fight the Nazis in World War II. Volunteering instead for Project: Rebirth, a secret military operation, he is physically transformed into a super-soldier dubbed Captain America. He along with his partner, Bucky, went on adventures fighting HYDRA, a Nazi organization created by Johann Schmidt, also known as the Red Skull. While he was in the 40`s he was a leader of a team known as the Invaders. While trying to prevent the detonation of a bomb on a plane, the bomb detonated, seemingly killing Bucky, and hurtling Captain America to the icy waters of the Arctic. Captain America was frozen in the Arctic for almost 70 years, but survives due to the super soldier serum. He is then he is found by the Avengers and becomes their leader and chairman. Currently, Cap leads the Avengers on adventures and battles.