Captain America: The First Avenger the film would not be released in China because of a policy limiting the number of foreign films screened there each year, but it eventually opened there in the second weekend of September. Days before the film's release, a teaser trailer for "The Avengers" that served as a post-credits scene of "Captain America: The First Avenger" was briefly leaked online. "Entertainment Weekly" speculated it came from a preview screening and described the footage as "shaky, fuzzy, flickering and obviously filmed on a cell phone". "Captain America: The First Avenger" was formatted and screened in IMAX for the first time on
Captain America (William Burnside) in contemporary times, to battle the original Captain America). This complicated origin is the reason that some sources list "Young Men" #24 as this character's first appearance, when in fact this, and subsequent 1950s-published Captain America stories, was clearly created with the intention of depicting the original Captain America. A 1977 story, "What If" Vol. 1 #4, (August, 1977), introduces two other, previous Captain Americas - William Naslund, appointed by Truman in 1945 to succeed the original Captain America, and Jeff Mace, who succeeds Naslund as Cap in the spring of 1946 after Naslund is killed in action. These versions