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Captain America, comic-strip superhero created by writer Joe Simon and artist Jack Kirby for Timely (later Marvel) Comics. The character debuted in March 1941 in Captain America Comics no. 1.
Simon and Kirby created Steve Rogers, a would-be army enlistee rejected by recruiters because of his small size. Rogers volunteers to receive a top-secret serum, and he is transformed into a “super soldier.” Dubbed Captain America and clad in a red, white, and blue costume with a matching stars-and-stripes shield, Rogers joins the U.S. Army, acquires a kid sidekick—plucky regimental mascot Bucky Barnes—and embarks on a career of enthusiastic Nazi-bashing.
The early stories were simple, straightforward tales peopled with bizarre villains such as the Hunchback of Hollywood, the Black Toad, and Ivan the Terrible. Chief among them was the Red Skull, a seemingly invincible Nazi whose face literally was a crimson skull. The stories of derring-do were gripping and fast-moving, and the comic became one of the most widely read titles of the so-called Golden Age of comics. Audience identification with Captain America was central to that success. The first issue announced the creation of “The Sentinels of Liberty” fan club; eager young readers could join for just a dime, which entitled them to a membership card and a metal badge. The club proved so popular that its badge promotion had to be discontinued because of wartime metal rationing.