Sgt. Rock's prototype first appeared in "G.I. Combat" #68 (January 1959). His rank is not given in this story; instead, he is merely called "The Rock". The Rock returned as a sergeant in "Our Army at War" #81 (April 1959) named "Sgt. Rocky" with his unit, Easy Company (the precise US Army infantry regiment to which Easy belonged was never identified during the history of the character). This second prototype story was written by Bob Haney, but the character's creator, Robert Kanigher was the editor. Kanigher would go on to create the bulk of the stories with Joe Kubert as the artist. In issue #82 (May 1959), he is called "Sgt. Rock" (name only) and by issue #83 (June 1959), he makes his first full appearance as Sgt. Rock.