Im a Cap fan and i had to give you this one :)

Steven Grant "Steve" Rogers is a World War II veteran, and is known as the world's first superhero. Born in Brooklyn, New York City, the young Rogers suffered from numerous health problems, and upon America's entry into World War II, was rejected from military service despite several attempts to enlist. Determined to serve, he ultimately volunteered for the top-secret Super Soldier program, and the frail Rogers was enhanced to the peak of human perfection. He soon joined the war effort as a mascot, given the moniker of Captain America, and later joined the war in a combat role after he single-handedly liberated captured Allied POWs.