The success of the main title lead Marvel Comics to produce a secondary title, G.I. Joe: Special Missions which lasted 28 issues. Herb Trimpe was the artist for nearly the entire run, with Dave Cockrum providing pencils on several issues. Spinning out of issue #50 of a story in the main title, the series featured more intense violence and a more ambiguous morality than the main title, while the enemies were conventional terrorists as well as Cobra itself.
1982-G.I. Joe – Real American Hero #91-155, Yearbook #1-4
1986-11 G.I. Joe – Order of Battle #1-4
1986-G.I. Joe – Special Missions #1-28