The text of the story itself isn’t much to read, but the art was fairly interesting to look at. What I found most interesting, though, was the fact that this story was solicited elsewhere in the magazine with art from someone else entirely. Maybe they just had a grail-themed two page splash laying around that they didn’t know what to do with.

(Heavy Metal issue #30, September 1979 – Pages 44&45 The Grail War by Monaco and Boas)