Publishing History: This series was published from October of 1986 to Mid-November of 1989 by Marvel Comics, running for 28 issues. It was the first spinoff series from the original G.I.Joe A Real American Hero regular series. The art style looked much the same because the large bulk of the books were drawn by "Mr. G.I.Joe" artist Herb Trimpe. The stories, while they fit into the regular G.I.Joe continuity and were written by legendary G.I.Joe scribe Larry Hama, were a little different than the regular series in that they were edgier and more violent. The Joe team was, of course, up against the Cobra organization, but it was also facing other terrorists that were not affiliated with Cobra.
This series was not put out on a consistent monthly basis. Bi-monthly can mean one of two things. It can mean either a book put out once every other month OR a book put out twice a month. When this series started it was put out one issue every other month, and by the time it ended, it was put out twice a month, albeit for only 2 issues. For the the last 2 issues of the series, Marvel started releasing G.I.Joe Special Missions twice a month, as it did with many of its other titles. Therefore, the second-to-last issue is dated November 1989, and the last issue is dated Mid-November 1989.