Curse of the Cannibal Confederates (1982)

The South Shall Rise Again…and Again...And Again

Three young couples head off into the woods for a weekend of camping, beer-guzzling, and love-making. Shortly into their trip, however, they stumble across a Civil War cemetery, making the ill-fated decision to pocket an old diary hidden at the site, which triggers a horde of rotting, undead soldiers to awaken from their tortured slumber.