Britannica Sources used in this answer

What did the super-soldier serum do to Steve Rogers?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Steve Rogers, who was initially rejected from the U.S. Army due to his small size, volunteered to receive a top-secret serum that transformed him into a "super-soldier". This serum granted him his powers, effectively turning him into a physically enhanced hero capable of serving as Captain America.12