This volume covers issues 71-80 of the Marvel GI Joe series (mostly from 1988). It includes the entire Cobra Civil War story (Cobra Commander vs Serpantor vs Destro vs the GI Joe team), the aftermath where the Joes are betrayed by their own government and several entertaining one-issue stories. The only things missing are the maps of Cobra Island showing the battlelines but the story is easy enough to follow without them.
While the two prior volumes had serious production issues with bad scans and misspelled words this one was fairly high quality. The art was a little flatter than I would like, I think some detail was lost in the reproduction, but it looks fine. I see another reviewer had a peeling cover but mine is holding up, it may have been an isolated problem.
The book has everything you'd expect from Larry Hama's classic GI Joe run. There's military jargon, blazing battles, betrayal, historical references and humor. The art, mainly by Ron Wagner and Marshall Rogers, is some of the best we would see in the Marvel series. There are some minor art issues, at the time GI Joe was so popular it was running biweekly with the artists trading off each issue. So you get things like Hawk taking time out of a fight to change uniforms between issues. It's irking but not too terrible given the deadlines they had.
So, if you like GI Joe, this is a fantastic book to pick up.