Captain America #321 (Sep 1986)

Captain America #321, published in Sep 1986, is a Copper Age Marvel comic featuring Captain America, written by Mark Gruenwald with cover art by Mike Zeck.

Entitled Ultimatum!, this story continues CAP's adventures as he faces threats to freedom, dangerous enemies, and wartime conspiracies.

It is regarded as a key Captain America comic due to the following significant event: 1st team appearance of U.L.T.I.M.A.T.U.M. (Underground Liberated Totally Integrated Mobile Army To Unite Mankind).

Featured appearances include Captain America (Steve Rogers), Ultimatum, Flag-Smasher, and other characters from Captain America’s world.

A Copper Age Captain America comic, this issue showcases a more modern Marvel tone, with evolving storylines, deeper character focus, and fan-favourite Captain America adventures.

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